Blackbird
Encyclopedia
The Common Blackbird is a species of true thrush
Thrush (bird)
The thrushes, family Turdidae, are a group of passerine birds that occur worldwide.-Characteristics:Thrushes are plump, soft-plumaged, small to medium-sized birds, inhabiting wooded areas, and often feed on the ground or eat small fruit. The smallest thrush may be the Forest Rock-thrush, at and...

. It is also called Eurasian Blackbird (especially in North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

, to distinguish it from the unrelated New World blackbird
New World blackbird
The New World blackbirds consist of 26 species of icterid birds that share the name blackbird but do not correspond with a formal taxon...

s), or simply Blackbird (in areas where it is the only blackbird-like species). It breeds in Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

, and North Africa
North Africa
North Africa or Northern Africa is the northernmost region of the African continent, linked by the Sahara to Sub-Saharan Africa. Geopolitically, the United Nations definition of Northern Africa includes eight countries or territories; Algeria, Egypt, Libya, Morocco, South Sudan, Sudan, Tunisia, and...

, and has been introduced
Introduced species
An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...

 to Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 and New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

. It has a number of subspecies
Subspecies
Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

 across its large range; a few of the Asian subspecies are sometimes considered to be full species. Depending on latitude
Latitude
In geography, the latitude of a location on the Earth is the angular distance of that location south or north of the Equator. The latitude is an angle, and is usually measured in degrees . The equator has a latitude of 0°, the North pole has a latitude of 90° north , and the South pole has a...

, the Common Blackbird may be resident, partially migratory
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...

 or fully migratory.

The male of the nominate subspecies, which is found throughout most of Europe, is all black except for a yellow eye-ring and bill
Beak
The beak, bill or rostrum is an external anatomical structure of birds which is used for eating and for grooming, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young...

 and has a rich melodious song; the adult female and juvenile
Juvenile (organism)
A juvenile is an individual organism that has not yet reached its adult form, sexual maturity or size. Juveniles sometimes look very different from the adult form, particularly in terms of their colour...

 have mainly dark brown plumage
Plumage
Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...

. This species breeds in woods and gardens, building a neat, mud-lined, cup-shaped nest. It is omnivorous, eating a wide range of insect
Insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s, earthworm
Earthworm
Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. In classical systems they were placed in the order Opisthopora, on the basis of the male pores opening posterior to the female pores, even though the internal male segments are anterior to the female...

s, berries
Berry
The botanical definition of a berry is a fleshy fruit produced from a single ovary. Grapes are an example. The berry is the most common type of fleshy fruit in which the entire ovary wall ripens into an edible pericarp. They may have one or more carpels with a thin covering and fleshy interiors....

, and fruit
Fruit
In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...

s.

Both sexes are territorial on the breeding grounds, with distinctive threat displays, but are more gregarious during migration and in wintering areas. Pairs will stay in their territory throughout the year where the climate is sufficiently temperate
Temperate
In geography, temperate or tepid latitudes of the globe lie between the tropics and the polar circles. The changes in these regions between summer and winter are generally relatively moderate, rather than extreme hot or cold...

. This common and conspicuous species has given rise to a number of literary and cultural references, frequently related to its song.

Taxonomy and name

The Common Blackbird was described by Linnaeus
Carolus Linnaeus
Carl Linnaeus , also known after his ennoblement as , was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature. He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology...

 in his Systema Naturae
Systema Naturae
The book was one of the major works of the Swedish botanist, zoologist and physician Carolus Linnaeus. The first edition was published in 1735...

in 1758 as Turdus merula (characterised as T. ater, rostro palpebrisque fulvis). The binomial name derives from two Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...

 words, turdus, "thrush", and merula, "blackbird", the latter giving rise to its French
French language
French is a Romance language spoken as a first language in France, the Romandy region in Switzerland, Wallonia and Brussels in Belgium, Monaco, the regions of Quebec and Acadia in Canada, and by various communities elsewhere. Second-language speakers of French are distributed throughout many parts...

 name, merle, and its Scots
Scots language
Scots is the Germanic language variety spoken in Lowland Scotland and parts of Ulster . It is sometimes called Lowland Scots to distinguish it from Scottish Gaelic, the Celtic language variety spoken in most of the western Highlands and in the Hebrides.Since there are no universally accepted...

 name, merl. There are about 65 species of medium to large thrushes in the genus Turdus, characterised by rounded heads, longish pointed wings, and usually melodious songs. The Common Blackbird seems to be closest in evolutionary terms to the Island Thrush
Island Thrush
The Island Thrush is a common forest bird in the thrush family. Almost 50 subspecies have been described, ranging from Taiwan, through South East Asia and Melanesia, to Samoa, exhibiting great differences in plumage...

 (T. poliocephalus) of Southeast Asia
Southeast Asia
Southeast Asia, South-East Asia, South East Asia or Southeastern Asia is a subregion of Asia, consisting of the countries that are geographically south of China, east of India, west of New Guinea and north of Australia. The region lies on the intersection of geological plates, with heavy seismic...

 and islands in the southwest Pacific
Pacific Ocean
The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

, which probably diverged from merula stock fairly recently.

It may not immediately be clear why the name "Blackbird", first recorded in 1486, was applied to this species, but not to one of the various other common black English birds, such as the Carrion Crow
Carrion Crow
The Carrion Crow is a member of the passerine order of birds and the crow family which is native to western Europe and eastern Asia.-Taxonomy:...

, Raven
Common Raven
The Common Raven , also known as the Northern Raven, is a large, all-black passerine bird. Found across the northern hemisphere, it is the most widely distributed of all corvids...

, Rook
Rook (bird)
The Rook is a member of the Corvidae family in the passerine order of birds. Named by Carl Linnaeus in 1758, the species name frugilegus is Latin for "food-gathering"....

 or Jackdaw
Jackdaw
The Jackdaw , sometimes known as the Eurasian Jackdaw, European Jackdaw or Western Jackdaw, is a passerine bird in the crow family. Found across Europe, western Asia and North Africa, it is mostly sedentary, although northern and eastern populations migrate south in winter. Four subspecies are...

. However, in Old English
Old English language
Old English or Anglo-Saxon is an early form of the English language that was spoken and written by the Anglo-Saxons and their descendants in parts of what are now England and southeastern Scotland between at least the mid-5th century and the mid-12th century...

, and in modern English
Modern English
Modern English is the form of the English language spoken since the Great Vowel Shift in England, completed in roughly 1550.Despite some differences in vocabulary, texts from the early 17th century, such as the works of William Shakespeare and the King James Bible, are considered to be in Modern...

 up to about the 18th century, "bird" was used only for smaller or young birds, and larger ones such as crows were called "fowl". At that time, the Blackbird was therefore the only widespread and conspicuous "black bird" in the British Isles. Until about the 17th century, another name for the species was ouzel, ousel or wosel (from Old English
Old English language
Old English or Anglo-Saxon is an early form of the English language that was spoken and written by the Anglo-Saxons and their descendants in parts of what are now England and southeastern Scotland between at least the mid-5th century and the mid-12th century...

 osle). Another variant occurs in Act 3 of Shakespeare's
William Shakespeare
William Shakespeare was an English poet and playwright, widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist. He is often called England's national poet and the "Bard of Avon"...

 A Midsummer Night's Dream
A Midsummer Night's Dream
A Midsummer Night's Dream is a play that was written by William Shakespeare. It is believed to have been written between 1590 and 1596. It portrays the events surrounding the marriage of the Duke of Athens, Theseus, and the Queen of the Amazons, Hippolyta...

, where Bottom
Nick Bottom
Nick Bottom is a character in Shakespeare's A Midsummer Night's Dream who provides comic relief throughout the play, and is famously known for getting his head transformed into that of an ass by the elusive Puck within the play.- Overview :...

 refers to "The Woosell cocke, so blacke of hew, With Orenge-tawny bill". The ouzel usage survived later in poetry
Poetry
Poetry is a form of literary art in which language is used for its aesthetic and evocative qualities in addition to, or in lieu of, its apparent meaning...

, and still occurs as the name of the closely related Ring Ouzel
Ring Ouzel
The Ring Ouzel is a European member of the thrush family Turdidae.It is the mountain equivalent of the closely related Common Blackbird, and breeds in gullies, rocky areas or scree slopes....

 (Turdus torquatus), and in Water Ouzel, an alternative name for the unrelated but superficially similar White-throated Dipper
White-throated Dipper
The White-throated Dipper , also known as the European Dipper or just Dipper is an aquatic passerine bird found in Europe, Middle East, Central Asia and the Indian Subcontinent. The species is divided into several subspecies, based primarily on colour differences, particularly of the pectoral band...

 (Cinclus cinclus).
Two related Asian Turdus thrushes
Thrush (bird)
The thrushes, family Turdidae, are a group of passerine birds that occur worldwide.-Characteristics:Thrushes are plump, soft-plumaged, small to medium-sized birds, inhabiting wooded areas, and often feed on the ground or eat small fruit. The smallest thrush may be the Forest Rock-thrush, at and...

, the White-collared Blackbird
White-collared Blackbird
The White-collared Blackbird is a species of bird in the Turdidae family.It is found in the Indian Subcontinent, ranging across Bangladesh, Bhutan, India, Myanmar, Nepal and Pakistan. Its natural habitats are subtropical or tropical moist montane forests and subtropical or tropical high-altitude...

 (T. albocinctus) and the Grey-winged Blackbird
Grey-winged Blackbird
The Grey-winged Blackbird is a species of bird in the Turdidae family.It is found in the northern parts of the Indian Subcontinent, stretching all the way to the nearer parts of Southeast Asia, including in Bangladesh, Bhutan, China, India, Laos, Myanmar, Nepal, Thailand, and Vietnam...

 (T. boulboul), are also named blackbirds, and the Somali Thrush
Somali Thrush
The Somali Thrush , also known as the Somali Blackbird, is a songbird species in the family Turdidae. It is endemic to Somalia.It has a black head and breast, yellow bill, brown back and wings and a grey belly with red sides....

 (T. (olivaceus) ludoviciae) is alternatively known as the Somali Blackbird.

The icterid
Icterid
The Icterids are a group of small to medium-sized, often colorful passerine birds restricted to the New World. Most species have black as a predominant plumage color, often enlivened by yellow, orange or red. The family is extremely varied in size, shape, behavior and coloration...

 family of the New World is sometimes called the blackbird family because of some species' superficial resemblance to the Old World thrushes, especially this species, but they are not evolutionarily close, being closer to the New World warbler
New World warbler
The New World warblers or wood-warblers are a group of small, often colorful, passerine birds restricted to the New World. They are not related to the Old World warblers or the Australian warblers....

s and tanager
Tanager
The tanagers comprise the bird family Thraupidae, in the order Passeriformes. The family has an American distribution.There were traditionally about 240 species of tanagers, but the taxonomic treatment of this family's members is currently in a state of flux...

s. The term is often limited to smaller species with mostly or entirely black plumage, at least in the breeding male, notably the cowbirds, the grackle
Grackle
Grackle can refer to any of eleven black passerine birds native to North and South America. All are members of the Icterid family but belong to multiple genera.* Genus Quiscalus** Boat-tailed Grackle, Quiscalus major...

s, and especially around 20 species with "blackbird" in the name, such as the Red-winged Blackbird
Red-winged Blackbird
The Red-winged Blackbird is a passerine bird of the family Icteridae found in most of North and much of Central America. It breeds from Alaska and Newfoundland south to Florida, the Gulf of Mexico, Mexico, and Guatemala, with isolated populations in western El Salvador, northwestern Honduras, and...

 and the Melodious Blackbird
Melodious Blackbird
The Melodious Blackbird, Dives dives, is a New World tropical icterid bird. It is a resident breeder from coastal eastern and southeastern Mexico to Costa Rica. Its range is expanding. El Salvador was colonised in the 1950s, and eastern Guatemala in the 1960s...

.

Description

The Common Blackbird of the nominate subspecies T. m. merula is 23.5 to 29 centimetres (9.25 to 11.4 in) in length, has a long tail, and weighs 80–125 gram
Gram
The gram is a metric system unit of mass....

mes (2.8 to 4.4 oz
Ounce
The ounce is a unit of mass with several definitions, the most commonly used of which are equal to approximately 28 grams. The ounce is used in a number of different systems, including various systems of mass that form part of the imperial and United States customary systems...

). The adult male has glossy black plumage
Plumage
Plumage refers both to the layer of feathers that cover a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage vary between species and subspecies and can also vary between different age classes, sexes, and season. Within species there can also be a...

, blackish-brown legs, a yellow eye-ring and an orange-yellow bill
Beak
The beak, bill or rostrum is an external anatomical structure of birds which is used for eating and for grooming, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young...

. The bill darkens somewhat in winter. The adult female is sooty-brown with a dull yellowish-brownish bill, a brownish-white throat and some weak mottling on the breast. The juvenile
Juvenile (organism)
A juvenile is an individual organism that has not yet reached its adult form, sexual maturity or size. Juveniles sometimes look very different from the adult form, particularly in terms of their colour...

 is similar to the female, but has pale spots on the upperparts, and the very young juvenile also has a speckled breast. Young birds vary in the shade of brown, with darker birds presumably males. The first year male resembles the adult male, but has a dark bill and weaker eye ring, and its folded wing is brown, rather than black like the body plumage.

Subspecies

As would be expected for a widespread passerine bird species, several geographical subspecies are recognised. The treatment of subspecies in this article follows Clement et al. (2000).
  • T. m. merula, the nominate subspecies, breeds commonly throughout much of Europe from Iceland
    Iceland
    Iceland , described as the Republic of Iceland, is a Nordic and European island country in the North Atlantic Ocean, on the Mid-Atlantic Ridge. Iceland also refers to the main island of the country, which contains almost all the population and almost all the land area. The country has a population...

    , the Faeroes and the British Isles
    British Isles
    The British Isles are a group of islands off the northwest coast of continental Europe that include the islands of Great Britain and Ireland and over six thousand smaller isles. There are two sovereign states located on the islands: the United Kingdom of Great Britain and Northern Ireland and...

     east to the Ural Mountains
    Ural Mountains
    The Ural Mountains , or simply the Urals, are a mountain range that runs approximately from north to south through western Russia, from the coast of the Arctic Ocean to the Ural River and northwestern Kazakhstan. Their eastern side is usually considered the natural boundary between Europe and Asia...

     and north to about 70 N, where it is fairly scarce. A small population breeds in the Nile
    Nile
    The Nile is a major north-flowing river in North Africa, generally regarded as the longest river in the world. It is long. It runs through the ten countries of Sudan, South Sudan, Burundi, Rwanda, Democratic Republic of the Congo, Tanzania, Kenya, Ethiopia, Uganda and Egypt.The Nile has two major...

     valley. Birds from the north of the range winter throughout Europe and around the Mediterranean including Cyprus
    Cyprus
    Cyprus , officially the Republic of Cyprus , is a Eurasian island country, member of the European Union, in the Eastern Mediterranean, east of Greece, south of Turkey, west of Syria and north of Egypt. It is the third largest island in the Mediterranean Sea.The earliest known human activity on the...

     and North Africa. The introduced birds in Australia and New Zealand are of the nominate race.
  • T. m. azorensis is a small race which breeds in the Azores
    Azores
    The Archipelago of the Azores is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about west from Lisbon and about east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the...

    . The male is darker and glossier than merula.
  • T. m. cabrerae, named for Ángel Cabrera
    Angel Cabrera
    Ángel Cabrera is an Argentine professional golfer who plays on both the European Tour and PGA Tour. He is known affectionately as "El Pato" in Spanish or in English as "The duck" for his waddling gait. He is a former U.S. Open champion and Masters champion. He is the first Argentine to win either...

    , Spanish
    Spain
    Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

     zoologist
    Zoology
    Zoology |zoölogy]]), is the branch of biology that relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct...

    , resembles azorensis and breeds in Madeira
    Madeira
    Madeira is a Portuguese archipelago that lies between and , just under 400 km north of Tenerife, Canary Islands, in the north Atlantic Ocean and an outermost region of the European Union...

     and the western Canary Islands
    Canary Islands
    The Canary Islands , also known as the Canaries , is a Spanish archipelago located just off the northwest coast of mainland Africa, 100 km west of the border between Morocco and the Western Sahara. The Canaries are a Spanish autonomous community and an outermost region of the European Union...

    .
  • T. m. mauretanicus, another small dark species with a glossy black male plumage, breeds in central and northern Morocco
    Morocco
    Morocco , officially the Kingdom of Morocco , is a country located in North Africa. It has a population of more than 32 million and an area of 710,850 km², and also primarily administers the disputed region of the Western Sahara...

    , coastal Algeria
    Algeria
    Algeria , officially the People's Democratic Republic of Algeria , also formally referred to as the Democratic and Popular Republic of Algeria, is a country in the Maghreb region of Northwest Africa with Algiers as its capital.In terms of land area, it is the largest country in Africa and the Arab...

     and northern Tunisia
    Tunisia
    Tunisia , officially the Tunisian RepublicThe long name of Tunisia in other languages used in the country is: , is the northernmost country in Africa. It is a Maghreb country and is bordered by Algeria to the west, Libya to the southeast, and the Mediterranean Sea to the north and east. Its area...

    .

  • T m. aterrimus breeds in Hungary
    Hungary
    Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The...

    , south and east to southern Greece
    Greece
    Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

    , Crete
    Crete
    Crete is the largest and most populous of the Greek islands, the fifth largest island in the Mediterranean Sea, and one of the thirteen administrative regions of Greece. It forms a significant part of the economy and cultural heritage of Greece while retaining its own local cultural traits...

     northern Turkey
    Turkey
    Turkey , known officially as the Republic of Turkey , is a Eurasian country located in Western Asia and in East Thrace in Southeastern Europe...

     and northern Iran
    Iran
    Iran , officially the Islamic Republic of Iran , is a country in Southern and Western Asia. The name "Iran" has been in use natively since the Sassanian era and came into use internationally in 1935, before which the country was known to the Western world as Persia...

    . It winters in southern Turkey, northern Egypt
    Egypt
    Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

    , Iraq
    Iraq
    Iraq ; officially the Republic of Iraq is a country in Western Asia spanning most of the northwestern end of the Zagros mountain range, the eastern part of the Syrian Desert and the northern part of the Arabian Desert....

     and southern Iran. It is smaller than merula with a duller male and paler female plumage.
  • T. m. syriacus breeds on the Mediterranean coast of southern Turkey south to Jordan
    Jordan
    Jordan , officially the Hashemite Kingdom of Jordan , Al-Mamlaka al-Urduniyya al-Hashemiyya) is a kingdom on the East Bank of the River Jordan. The country borders Saudi Arabia to the east and south-east, Iraq to the north-east, Syria to the north and the West Bank and Israel to the west, sharing...

    , Israel
    Israel
    The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...

     and the northern Sinai. It is mostly resident, but part of the population moves south west or west to winter in the Jordan Valley  and in the Nile Delta
    Nile Delta
    The Nile Delta is the delta formed in Northern Egypt where the Nile River spreads out and drains into the Mediterranean Sea. It is one of the world's largest river deltas—from Alexandria in the west to Port Said in the east, it covers some 240 km of Mediterranean coastline—and is a rich...

     of northern Egypt
    Egypt
    Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

     south to about Cairo
    Cairo
    Cairo , is the capital of Egypt and the largest city in the Arab world and Africa, and the 16th largest metropolitan area in the world. Nicknamed "The City of a Thousand Minarets" for its preponderance of Islamic architecture, Cairo has long been a centre of the region's political and cultural life...

    . Both sexes of this subspecies are darker and greyer than the equivalent merula plumages.
  • T. m. intermedius is an Asiatic race breeding from Central Russia
    Russia
    Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

     to Tajikistan
    Tajikistan
    Tajikistan , officially the Republic of Tajikistan , is a mountainous landlocked country in Central Asia. Afghanistan borders it to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east....

    , western and north east Afghanistan, and eastern China
    China
    Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

    . Many birds are resident but some are altitudinal migrants and occur in southern Afghanistan and southern Iraq in winter. This is a large subspecies, with a sooty-black male and a blackish-brown female.

  • T. m. maximus is a large montane subspecies found from eastern Afghanistan east through the Himalayas between 3200 and 4800 metres (10,560–16,000 ft) to Sikkim
    Sikkim
    Sikkim is a landlocked Indian state nestled in the Himalayan mountains...

    , Assam
    Assam
    Assam , also, rarely, Assam Valley and formerly the Assam Province , is a northeastern state of India and is one of the most culturally and geographically distinct regions of the country...

    , southern Tibet and western Szechwan, China. It is an altitudinal migrant, and in winter occurs down to 2100 metres (6930 ft) in south east Tibet, but not below 3000 metres (9900 ft) further west. The male is black and the female very dark brown. It is the only subspecies without a yellow or orange eye-ring.
  • T. m. mandarinus breeds throughout much of south, central and east China. It is a partial migrant to Hong Kong
    Hong Kong
    Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...

     and south to Laos
    Laos
    Laos Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ Sathalanalat Paxathipatai Paxaxon Lao, officially the Lao People's Democratic Republic, is a landlocked country in Southeast Asia, bordered by Burma and China to the northwest, Vietnam to the east, Cambodia to the south and Thailand to the west...

     and Vietnam
    Vietnam
    Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

    . The male is sooty black, and the female is similar but browner, and paler on the underparts. It is a large subspecies.
  • T. m. sowerbyi, named for James Sowerby
    James Sowerby
    James Sowerby was an English naturalist and illustrator. Contributions to published works, such as A Specimen of the Botany of New Holland or English Botany, include his detailed and appealing plates...

    , British
    Great Britain
    Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

     naturalist
    Naturalist
    Naturalist may refer to:* Practitioner of natural history* Conservationist* Advocate of naturalism * Naturalist , autobiography-See also:* The American Naturalist, periodical* Naturalism...

     and illustrator, breeds from east Szechwan to Guizhou
    Guizhou
    ' is a province of the People's Republic of China located in the southwestern part of the country. Its provincial capital city is Guiyang.- History :...

    . It is partially migratory, with some individuals spending the winter in south China and north Indochina
    Indochina
    The Indochinese peninsula, is a region in Southeast Asia. It lies roughly southwest of China, and east of India. The name has its origins in the French, Indochine, as a combination of the names of "China" and "India", and was adopted when French colonizers in Vietnam began expanding their territory...

    . It resembles mandarinus, but is smaller and darker below.
  • T. m. nigropileus is resident up to about 1820 metres (6000 ft) in the Western Ghats
    Western Ghats
    The Western Ghats, Western Ghauts or the Sahyādri is a mountain range along the western side of India. It runs north to south along the western edge of the Deccan Plateau, and separates the plateau from a narrow coastal plain along the Arabian Sea. The Western Ghats block rainfall to the Deccan...

     of western India and the northern and central parts of the Western Ghats
    Western Ghats
    The Western Ghats, Western Ghauts or the Sahyādri is a mountain range along the western side of India. It runs north to south along the western edge of the Deccan Plateau, and separates the plateau from a narrow coastal plain along the Arabian Sea. The Western Ghats block rainfall to the Deccan...

    . Some populations migrate further south in winter. The male is brownish slate-grey with a dark cap, and the female is mid-brown, paler below. It is small with a relatively broad yellow eye-ring.


  • T. m. spencei, named for William Spence
    William Spence (entomologist)
    William Spence was a British economist and entomologist.Spence was born in Bishop Burton in the East Riding of Yorkshire, the oldest of four children of farmer Robert Spence. He was apprenticed to Russian merchants and shipowners Carhill, Greenwood & Co...

    , British
    Great Britain
    Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

     entomologist
    Entomology
    Entomology is the scientific study of insects, a branch of arthropodology...

    , is very similar to nigropileus, but has a less distinct cap. It is resident in the Eastern Ghats
    Eastern Ghats
    The Eastern Ghats or Eastern Ghauts are a discontinuous range of mountains along India's eastern coast. The Eastern Ghats run from West Bengal state in the north, through Orissa and Andhra Pradesh to Tamil Nadu in the south passing some parts of Karnataka. They are eroded and cut through by the...

     of India. It is of dubious validity, and is often included in nigropileus with which it is said to integrade in the Nallamala Hills.
  • T. m. simillimus is a common resident of the hills in Kerala
    Kerala
    or Keralam is an Indian state located on the Malabar coast of south-west India. It was created on 1 November 1956 by the States Reorganisation Act by combining various Malayalam speaking regions....

     and Tamil Nadu
    Tamil Nadu
    Tamil Nadu is one of the 28 states of India. Its capital and largest city is Chennai. Tamil Nadu lies in the southernmost part of the Indian Peninsula and is bordered by the union territory of Pondicherry, and the states of Kerala, Karnataka, and Andhra Pradesh...

    , south west India. It is darker than spencei.
  • T. m. bourdilloni, named for Thomas Fulton Bourdillon
    T. F. Bourdillon
    Thomas Fulton Bourdillon was Conservator of Forests in the princely state of Travancore.He came to Travancore as a planter in 1871 and appointed by the Travancore Durbar in 1886 as special forest officer to explore the forests and to report on their resources...

    , Conservator of Forests in the then princely state of Travancore
    Travancore
    Kingdom of Travancore was a former Hindu feudal kingdom and Indian Princely State with its capital at Padmanabhapuram or Trivandrum ruled by the Travancore Royal Family. The Kingdom of Travancore comprised most of modern day southern Kerala, Kanyakumari district, and the southernmost parts of...

    , is a common resident of the hills above 900 metres (3000 ft) in southern Kerala and Tamil Nadu. It resembles simillimus and intergrades with it in the Palni Hills, but the male is uniform slate brown.
  • T. m. kinnisii, named for John Kinnis
    John Kinnis
    Dr John Kinnis was a medical superintendent to the British military forces in Ceylon in the nineteenth century, and wrote a number of paper for the Edinburgh Medical and Surgical Journal on, for example, elephantiasis, smallpox vaccination and military medical statistics...

    , surgeon to the British
    Great Britain
    Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

     military forces in what was then Ceylon, breeds in the hills of Sri Lanka
    Sri Lanka
    Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

     above 900 metres (3000 ft). The male is uniformly blue-grey, and the female is similar but browner. Size as in nigropileus, but eye-ring more reddish-orange.


The taxonomy, especially of the Asian subspecies
Subspecies
Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...

, is complex. The subspecies from most of the Indian subcontinent
Indian subcontinent
The Indian subcontinent, also Indian Subcontinent, Indo-Pak Subcontinent or South Asian Subcontinent is a region of the Asian continent on the Indian tectonic plate from the Hindu Kush or Hindu Koh, Himalayas and including the Kuen Lun and Karakoram ranges, forming a land mass which extends...

, simillimus, nigropileus, bourdilloni, spencei, and kinnissi, are small, only 19–20 centimetres (7.5–8 in) long, and have broad eye-rings. They also differ in proportions, wing formula, egg colour and voice from the other subspecies of the Common Blackbird. They are therefore sometimes considered a separate species, the Indian Blackbird (T. simillimus). The Himalayan
Himalayas
The Himalaya Range or Himalaya Mountains Sanskrit: Devanagari: हिमालय, literally "abode of snow"), usually called the Himalayas or Himalaya for short, is a mountain range in Asia, separating the Indian subcontinent from the Tibetan Plateau...

 subspecies maximus is strikingly different from the simillimus group, being relatively large at 23–28 centimetres (9–11 in) length. It differs from all other subspecies of the Common Blackbird by its complete lack of eye-ring and reduced song. It is therefore sometimes considered a full species, the Tibetan Blackbird (T. maximus). The remaining Asian subspecies, the relatively large intermedius and mandarinus, and the smaller sowerbyi, also differ in structure and voice, and may represent a third species, the Chinese Blackbird (T. mandarinus). Alternatively, it has been suggested that they should be considered subspecies of T. maximus, but they differ in structure, voice and the appearance of the eye-ring.

Similar species

In Europe, the Common Blackbird can be confused with the paler-winged first-winter Ring Ouzel
Ring Ouzel
The Ring Ouzel is a European member of the thrush family Turdidae.It is the mountain equivalent of the closely related Common Blackbird, and breeds in gullies, rocky areas or scree slopes....

 (Turdus torquatus) or the superficially similar European Starling
European Starling
The Common Starling , also known as the European Starling or just Starling, is a passerine bird in the family Sturnidae.This species of starling is native to most of temperate Europe and western Asia...

 (Sturnus vulgaris). The Sri Lanka
Sri Lanka
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...

n subspecies, T. m. kinsii, resembles the Sri Lanka Whistling-thrush  (Myophonus blighi) and the out-of-range Tickell's Thrush
Tickell's Thrush
Tickell's Thrush is a passerine bird in the thrush family Turdidae. It is common in open forest in the Himalaya, and migrates seasonally into peninsular India....

 (Turdus unicolor). However, the former species always has blue in the plumage, and the latter has a pale belly. A number of similar Turdus thrushes exist far outside the range of the Common Blackbird, for example the South American Chiguanco Thrush
Chiguanco Thrush
The Chiguanco Thrush is a species of bird in the Turdidae family.It is found in Argentina, Bolivia, Chile, Ecuador, and Peru.Its natural habitats are subtropical or tropical high-altitude shrubland and heavily degraded former forest....

 (Turdus chiguanco).

Distribution and habitat

The Common Blackbird breeds in temperate Eurasia
Eurasia
Eurasia is a continent or supercontinent comprising the traditional continents of Europe and Asia ; covering about 52,990,000 km2 or about 10.6% of the Earth's surface located primarily in the eastern and northern hemispheres...

, North Africa
North Africa
North Africa or Northern Africa is the northernmost region of the African continent, linked by the Sahara to Sub-Saharan Africa. Geopolitically, the United Nations definition of Northern Africa includes eight countries or territories; Algeria, Egypt, Libya, Morocco, South Sudan, Sudan, Tunisia, and...

, the Canary Islands
Canary Islands
The Canary Islands , also known as the Canaries , is a Spanish archipelago located just off the northwest coast of mainland Africa, 100 km west of the border between Morocco and the Western Sahara. The Canaries are a Spanish autonomous community and an outermost region of the European Union...

, and South Asia
South Asia
South Asia, also known as Southern Asia, is the southern region of the Asian continent, which comprises the sub-Himalayan countries and, for some authorities , also includes the adjoining countries to the west and the east...

. It has been introduced to Australia and New Zealand. Populations are sedentary in the south and west of the range, although northern birds migrate
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...

 south as far as northern Africa and tropical Asia in winter. Urban males are more likely to overwinter
Overwinter
To overwinter is to pass through or wait out the winter season, or to pass through that period of the year when “winter” conditions make normal activity or even survival difficult or near impossible...

 in cooler climes than rural males, an adaptation made feasible by the warmer microclimate and relatively abundant food that allow the birds to establish territories and start reproducing earlier in the year.

Common over most of its range in woodland, the Common Blackbird has a preference for deciduous trees with dense undergrowth. However, gardens provide the best breeding habitat with up to 7.3 pairs per hectare
Hectare
The hectare is a metric unit of area defined as 10,000 square metres , and primarily used in the measurement of land. In 1795, when the metric system was introduced, the are was defined as being 100 square metres and the hectare was thus 100 ares or 1/100 km2...

 (nearly three pairs per acre
Acre
The acre is a unit of area in a number of different systems, including the imperial and U.S. customary systems. The most commonly used acres today are the international acre and, in the United States, the survey acre. The most common use of the acre is to measure tracts of land.The acre is related...

), with woodland typically holding about a tenth of that density, and open and very built-up habitats even less. They are often replaced by the related Ring Ouzel
Ring Ouzel
The Ring Ouzel is a European member of the thrush family Turdidae.It is the mountain equivalent of the closely related Common Blackbird, and breeds in gullies, rocky areas or scree slopes....

 in areas of higher altitude.

The Common Blackbird occurs up to 1000 metres (3300 ft) in Europe, 2300 metres (7590 ft) in North Africa, and at 900–1820 metres (3000–6000 ft) in peninsular India and Sri Lanka, but the large Himalayan subspecies range much higher, with T. m. maximus breeding at 3200–4800 metres (10560–16000 ft) and remaining above 2100 metres (6930 ft) even in winter.

This widespread species has occurred as a vagrant in many locations in Eurasia outside its normal range, but records from North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 are normally considered to involve escapees, including, for example, the 1971 bird in Quebec
Quebec
Quebec or is a province in east-central Canada. It is the only Canadian province with a predominantly French-speaking population and the only one whose sole official language is French at the provincial level....

. However, a 1994 record from Bonavista, Newfoundland
Bonavista, Newfoundland and Labrador
Bonavista is a town on the Bonavista Peninsula, Newfoundland in the Canadian province of Newfoundland and Labrador. Unlike many Newfoundland coastal settlements, Bonavista was built on an open plain, not in a steep cove, and thus had room to expand to its current area of 31.5  square...

 has been accepted as a genuine wild bird, and the species is therefore on the North American list.

Status

The Common Blackbird has an extensive range, estimated at 10 million square kilometres (3.8 million square miles), and a large population, including an estimated 79 to 160 million individuals in Europe alone. The species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations), and is therefore evaluated as Least Concern
Least Concern
Least Concern is an IUCN category assigned to extant taxon or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, Near Threatened, or Conservation Dependent...

. In the western Palaearctic, populations are generally stable or increasing, but there have been local declines, especially on farmland, which may be due to agricultural policies that encouraged farmers to remove hedgerows (which provide nesting places), and to drain damp grassland and increase the use of pesticide
Pesticide
Pesticides are substances or mixture of substances intended for preventing, destroying, repelling or mitigating any pest.A pesticide may be a chemical unicycle, biological agent , antimicrobial, disinfectant or device used against any pest...

s, both of which could have reduced the availability of invertebrate food.

The Common Blackbird was introduced to Australia at Melbourne
Melbourne
Melbourne is the capital and most populous city in the state of Victoria, and the second most populous city in Australia. The Melbourne City Centre is the hub of the greater metropolitan area and the Census statistical division—of which "Melbourne" is the common name. As of June 2009, the greater...

 in the 1850s, but has expanded from its initial foothold in Melbourne and Adelaide
Adelaide
Adelaide is the capital city of South Australia and the fifth-largest city in Australia. Adelaide has an estimated population of more than 1.2 million...

 to occur throughout south-eastern Australia, including Tasmania
Tasmania
Tasmania is an Australian island and state. It is south of the continent, separated by Bass Strait. The state includes the island of Tasmania—the 26th largest island in the world—and the surrounding islands. The state has a population of 507,626 , of whom almost half reside in the greater Hobart...

 and the Bass Strait
Bass Strait
Bass Strait is a sea strait separating Tasmania from the south of the Australian mainland, specifically the state of Victoria.-Extent:The International Hydrographic Organization defines the limits of the Bass Strait as follows:...

 islands. The introduced population in Australia is considered a pest because it damages a variety of soft fruits in orchards, parks and gardens including berries, cherries, stone fruit and grapes. It is thought to spread weeds, such as blackberry
Blackberry
The blackberry is an edible fruit produced by any of several species in the Rubus genus of the Rosaceae family. The fruit is not a true berry; botanically it is termed an aggregate fruit, composed of small drupelets. The plants typically have biennial canes and perennial roots. Blackberries and...

, and may compete with native birds for food and nesting sites.

The introduced Common Blackbird is, together with the native Silvereye
Silvereye
The Silvereye or Wax-eye is a very small passerine bird native to Australia, New Zealand and the south-west Pacific islands of Lord Howe, New Caledonia, Loyalty Islands, Vanuatu, and Fiji...

 (Zosterops lateralis), the most widely distributed avian seed disperser in New Zealand. Introduced there along with the Song Thrush
Song Thrush
The Song Thrush is a thrush that breeds across much of Eurasia. It is also known in English dialects as throstle or mavis. It has brown upperparts and black-spotted cream or buff underparts and has three recognised subspecies...

 (Turdus philomelos) in 1862, it has spread throughout the country up to an elevation of 1500 metres (4,921 ft), as well as outlying islands such as the Campbell
Campbell Island group
The Campbell Island group is a group of subantarctic islands, belonging to New Zealand. The group has a total area of , consisting of one big island, Campbell Island , and several small islets, notably Dent Island , Isle de Jeanette Marie , Jacquemart Island , and Monowai Island 1...

 and Kermadecs
Kermadec Islands
The Kermadec Islands are a subtropical island arc in the South Pacific Ocean northeast of New Zealand's North Island, and a similar distance southwest of Tonga...

. It eats a wide range of native and exotic fruit, and makes a major contribution to the development of communities of naturalised woody weeds. These communities provide fruit more suited to non-endemic native birds and naturalised birds, than to endemic birds.

Behaviour

The male Common Blackbird defends its breeding territory, chasing away other males or utilising a "bow and run" threat display. This consists of a short run, the head first being raised and then bowed with the tail dipped simultaneously. If a fight between male Blackbirds does occur, it is usually short and the intruder is soon chased away. The female Blackbird is also aggressive in the spring when it competes with other females for a good nesting territory, and although fights are less frequent, they tend to be more violent.

The bill’s appearance is important in the interactions of the Common Blackbird. The territory-holding male responds more aggressively towards models with orange bills than to those with yellow bills, and reacts least to the brown bill colour typical of the first-year male. The female is, however, relatively indifferent to bill colour, but responds instead to shinier bills.

As long as winter food is available, both the male and female will remain in the territory throughout the year, although occupying different areas. Migrants are more gregarious, travelling in small flocks and feeding in loose groups in the wintering grounds. The flight of migrating birds comprises bursts of rapid wing beats interspersed with level or diving movement, and differs from both the normal fast agile flight of this species and the more dipping action of larger thrushes.

Breeding

The male Common Blackbird attracts the female with a courtship display which consists of oblique runs combined with head-bowing movements, an open beak, and a "strangled" low song. The female remains motionless until she raises her head and tail to permit copulation. This species is monogamous, and the established pair will usually stay together as long as they both survive. Pair separation rates of up to 20% have been noted following poor breeding. Although socially monogamous, there have been studies showing as much as 17% extra pair paternity.

Nominate T. merula may commence breeding in March, but eastern and Indian races are a month or more later, and the introduced New Zealand birds start nesting in August. The breeding pair prospect for a suitable nest site in a creeper or bush, favouring evergreen or thorny species such as ivy
Ivy
Ivy, plural ivies is a genus of 12–15 species of evergreen climbing or ground-creeping woody plants in the family Araliaceae, native to western, central and southern Europe, Macaronesia, northwestern Africa and across central-southern Asia east to Japan and Taiwan.-Description:On level ground they...

, holly
Holly
Ilex) is a genus of 400 to 600 species of flowering plants in the family Aquifoliaceae, and the only living genus in that family. The species are evergreen and deciduous trees, shrubs, and climbers from tropics to temperate zones world wide....

, hawthorn
Crataegus
Crataegus , commonly called hawthorn or thornapple, is a large genus of shrubs and trees in the rose family, Rosaceae, native to temperate regions of the Northern Hemisphere in Europe, Asia and North America. The name hawthorn was originally applied to the species native to northern Europe,...

, honeysuckle
Honeysuckle
Honeysuckles are arching shrubs or twining vines in the family Caprifoliaceae, native to the Northern Hemisphere. There are about 180 species of honeysuckle, 100 of which occur in China; Europe, India and North America have only about 20 native species each...

 or pyracantha
Pyracantha
Pyracantha is a genus of thorny evergreen large shrubs in the family Rosaceae, with common names Firethorn or Pyracantha. They are native to an area extending from Southeast Europe east to Southeast Asia, resemble and are related to Cotoneaster, but have serrated leaf margins and numerous thorns...

, and the female builds a neat cup-shaped nest
Bird nest
A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American Robin or Eurasian Blackbird, or the elaborately woven hanging nest of the...

 from grasses and similar vegetation. She lays three to five (usually four) bluish-green eggs
Egg (biology)
An egg is an organic vessel in which an embryo first begins to develop. In most birds, reptiles, insects, molluscs, fish, and monotremes, an egg is the zygote, resulting from fertilization of the ovum, which is expelled from the body and permitted to develop outside the body until the developing...

 marked with reddish-brown blotches, heaviest at the larger end; the eggs of nominate T. merula are 2.9 x 2.1 centimetres (1.14 x 0.93 in) in size and weigh 7.2 grammes (0.25 oz), of which 6% is shell. Eggs of birds of the southern Indian races are paler than those from the northern subcontinent and Europe.

The female incubates for 12–14 days before the altricial
Altricial
Altricial, meaning "requiring nourishment", refers to a pattern of growth and development in organisms which are incapable of moving around on their own soon after hatching or being born...

 chicks are hatched naked and blind. Fledging takes another 10–19 (average 13.6) days, with both parents feeding the young and removing faecal sacs. The young are fed by the parents for up to three weeks after leaving the nest, and will follow the adults begging for food. If the female starts another nest, the male alone will feed the fledged young. Second broods are common, with the female reusing the same nest if the brood was successful, and three broods may be raised in the south of the Common Blackbird's range.

Montane subspecies, such as T. merula maximus have a shorter breeding season, smaller clutches (2–4 eggs, averaging 2.86), but larger eggs than nominate merula. They produce just one brood per year, and have a slightly shorter incubation period of 12–13 days, but a longer nestling period (16–18 days).

A Common Blackbird has an average life expectancy
Life expectancy
Life expectancy is the expected number of years of life remaining at a given age. It is denoted by ex, which means the average number of subsequent years of life for someone now aged x, according to a particular mortality experience...

 of 2.4 years, and, based on data from bird ringing
Bird ringing
Bird ringing or bird banding is a technique used in the study of wild birds, by attaching a small, individually numbered, metal or plastic tag to their legs or wings, so that various aspects of the bird's life can be studied by the ability to re-find the same individual later...

, the oldest recorded age is 21 years and 10 months.

Songs and calls

A male singing
Song 1
Song 2

The first-year male Common Blackbird of the nominate race may start singing as early as late January in fine weather in order to establish a territory, followed in late March by the adult male. The male's song is a varied and melodious low-pitched fluted warble, given from trees, rooftops or other elevated perches mainly in the period from March to June, sometimes into the beginning of July. It has a number of other calls, including an aggressive seee, a pook-pook-pook alarm for terrestrial predators like cats, and various chink and chook, chook vocalisations. The territorial male invariably gives chink-chink calls in the evening in an (usually unsuccessful) attempt to deter other Blackbirds from roosting in its territory overnight. Like other passerine birds, it has a thin high seee alarm call for threats from birds of prey
Bird of prey
Birds of prey are birds that hunt for food primarily on the wing, using their keen senses, especially vision. They are defined as birds that primarily hunt vertebrates, including other birds. Their talons and beaks tend to be relatively large, powerful and adapted for tearing and/or piercing flesh....

 since the sound is rapidly attenuated in vegetation, making the source difficult to locate.

At least two subspecies, T. m. merula and T. m. nigropileus, will mimic other species of birds, cats, humans or alarms, but this is usually quiet and hard to detect. The large mountain races, especially T. m. maximus, have comparatively poor songs, with a limited repertoire compared with the western, peninsular Indian and Sri Lankan taxa
Taxon
|thumb|270px|[[African elephants]] form a widely-accepted taxon, the [[genus]] LoxodontaA taxon is a group of organisms, which a taxonomist adjudges to be a unit. Usually a taxon is given a name and a rank, although neither is a requirement...

.

Feeding

The Common Blackbird is omnivorous, eating a wide range of insect
Insect
Insects are a class of living creatures within the arthropods that have a chitinous exoskeleton, a three-part body , three pairs of jointed legs, compound eyes, and two antennae...

s, earthworm
Earthworm
Earthworm is the common name for the largest members of Oligochaeta in the phylum Annelida. In classical systems they were placed in the order Opisthopora, on the basis of the male pores opening posterior to the female pores, even though the internal male segments are anterior to the female...

s, seeds and berries. It feeds mainly on the ground, running and hopping with a start-stop-start progress. It pulls earthworms from the soil, usually finding them by sight, but sometimes by hearing, and roots through leaf litter for other invertebrate
Invertebrate
An invertebrate is an animal without a backbone. The group includes 97% of all animal species – all animals except those in the chordate subphylum Vertebrata .Invertebrates form a paraphyletic group...

s. Small vertebrate
Vertebrate
Vertebrates are animals that are members of the subphylum Vertebrata . Vertebrates are the largest group of chordates, with currently about 58,000 species described. Vertebrates include the jawless fishes, bony fishes, sharks and rays, amphibians, reptiles, mammals, and birds...

s such as frogs, tadpoles and lizards are occasionally hunted. This species will also perch in bushes to take berries and collect caterpillar
Caterpillar
Caterpillars are the larval form of members of the order Lepidoptera . They are mostly herbivorous in food habit, although some species are insectivorous. Caterpillars are voracious feeders and many of them are considered to be pests in agriculture...

s and other active insects. Animal prey predominates, and is particularly important during the breeding season, with windfall apples and berries taken more in the autumn and winter. The nature of the fruit taken depends on what is locally available, and frequently includes exotics in gardens. In northern India, banyan
Banyan
A banyan is a fig that starts its life as an epiphyte when its seeds germinate in the cracks and crevices on a host tree...

 and mulberry
Mulberry
Morus is a genus of flowering plants in the family Moraceae. The 10–16 species of deciduous trees it contains are commonly known as Mulberries....

 fruits are frequently eaten, with Erythrina
Erythrina
Erythrina is a genus of flowering plants in the pea family, Fabaceae. It contains about 130 species, which are distributed in tropical and subtropical regions worldwide. They are trees, growing up to in height...

and Trema
Trema
Trema is a genus of about 15 species of evergreen trees closely related to the hackberries , occurring in subtropical and tropical regions of southern Asia, northern Australasia, Africa, South and Central America, and parts of North America...

species featuring further south.

Natural threats

The main predator of the Common Blackbird is the domestic cat
Cat
The cat , also known as the domestic cat or housecat to distinguish it from other felids and felines, is a small, usually furry, domesticated, carnivorous mammal that is valued by humans for its companionship and for its ability to hunt vermin and household pests...

, but fox
Fox
Fox is a common name for many species of omnivorous mammals belonging to the Canidae family. Foxes are small to medium-sized canids , characterized by possessing a long narrow snout, and a bushy tail .Members of about 37 species are referred to as foxes, of which only 12 species actually belong to...

es and predatory birds, such as the Sparrowhawk
Accipiter
The genus Accipiter is a group of birds of prey in the family Accipitridae, many of which are named as goshawks and sparrowhawks. They can be anatomically distinguished from their relatives by the lack of a procoracoid foramen. Two small and aberrant species usually placed here do possess a large...

 and other accipiter
Accipiter
The genus Accipiter is a group of birds of prey in the family Accipitridae, many of which are named as goshawks and sparrowhawks. They can be anatomically distinguished from their relatives by the lack of a procoracoid foramen. Two small and aberrant species usually placed here do possess a large...

s, also take this species when the opportunity arises. In contrast, there is little direct evidence to show that either predation of the adult Blackbirds or loss of the eggs and chicks to corvids
Corvidae
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, jackdaws, jays, magpies, treepies, choughs and nutcrackers. The common English names used are corvids or the crow family , and there are over 120 species...

, such as the European Magpie
European Magpie
The European Magpie, Eurasian Magpie, or Common Magpie, , is a resident breeding bird throughout Europe, much of Asia and northwest Africa. It is one of several birds in the crow family named as magpies, and belongs to the Holarctic radiation of "monochrome" magpies...

 or Eurasian Jay
Eurasian Jay
The Eurasian Jay is a species of bird occurring over a vast region from Western Europe and north-west Africa to the Indian Subcontinent and further to the eastern seaboard of Asia and down into south-east Asia...

, have a direct impact on population numbers.

This species is occasionally a host of parasitic
Brood parasite
Brood parasites are organisms that use the strategy of brood parasitism, a kind of kleptoparasitism found among birds, fish or insects, involving the manipulation and use of host individuals either of the same or different species to raise the young of the brood-parasite...

 cuckoo
Cuckoo
The cuckoos are a family, Cuculidae, of near passerine birds. The order Cuculiformes, in addition to the cuckoos, also includes the turacos . Some zoologists and taxonomists have also included the unique Hoatzin in the Cuculiformes, but its taxonomy remains in dispute...

s, such as the Common Cuckoo
Common Cuckoo
The Common Cuckoo is a member of the cuckoo order of birds, Cuculiformes, which includes the roadrunners, the anis and the coucals....

 (Cuculus canorus), but this is minimal because the Common Blackbird recognizes the adult of the parasitic species and its non-mimetic eggs. The introduced merula Blackbird in New Zealand, where the cuckoo does not occur, has, over the past 130 years, lost the ability to recognize the adult Common Cuckoo but still rejects non-mimetic eggs.

As with other passerine birds, parasites are common. 88% of Common Blackbirds were found to have intestinal parasite
Intestinal parasite
Intestinal parasites are parasites that populate the gastro-intestinal tract in humans and other animals. They can live throughout the body, but most prefer the intestinal wall. Means of exposure include: ingestion of undercooked meat, drinking infected water, and skin absorption...

s, most frequently Isospora
Isospora
Isospora is a genus of internal parasites classified under Coccidia.It is responsible for the condition isosporiasis.At least 248 species have been described in this genus, but most of them are little studied and it is doubtful whether all should be recognized as distinct species...

and Capillaria
Capillaria (genus)
Capillaria is a genus of nematodes in the family Trichinellidae. Some species formerly placed in this genus are now classified in Aonchotheca.-Species:Species in the genus Capillaria include:* Capillaria aerophila*Capillaria gastrica...

species. and more than 80% had haematozoan parasites (Leucocytozoon, Plasmodium
Plasmodium
Plasmodium is a genus of parasitic protists. Infection by these organisms is known as malaria. The genus Plasmodium was described in 1885 by Ettore Marchiafava and Angelo Celli. Currently over 200 species of this genus are recognized and new species continue to be described.Of the over 200 known...

, Haemoproteus
Haemoproteus
Haemoproteus is a genus of protozoa that are parasitic in birds, reptiles and amphibians. Its name is derived from Greek: Haima - blood and Proteus - a sea god who had the power of assuming different shapes. The name Haemoproteus was first used in the description of Haemoproteus columbae in the...

and Trypanosoma
Trypanosoma
Trypanosoma is a genus of kinetoplastids , a monophyletic group of unicellular parasitic flagellate protozoa. The name is derived from the Greek trypano and soma because of their corkscrew-like motion. All trypanosomes are heteroxenous and are transmitted via a vector...

species).

Common Blackbirds spend much of their time looking for food on the ground where they can become infested with ticks, which are external parasites that most commonly attach to the head of a Blackbird. In France, 74% of rural Blackbirds were found to be infested with Ixodes
Ixodes
Ixodes is a genus of hard-bodied ticks . It includes important disease vectors of animals and humans . Some ticks in this genus may transmit the pathogenic bacterium Borrelia burgdorferi responsible for causing Lyme disease...

ticks, whereas, only 2% of Blackbirds living in urban habitats were infested. This is partly because it is more difficult for ticks to find another host on lawns and gardens in urban areas than in uncultivated rural areas, and partly because ticks are likely to be commoner in rural areas, where a variety of tick hosts, such as foxes, deer and boar, are more numerous. Although, ixodid ticks can transmit pathogen
Pathogen
A pathogen gignomai "I give birth to") or infectious agent — colloquially, a germ — is a microbe or microorganism such as a virus, bacterium, prion, or fungus that causes disease in its animal or plant host...

ic viruses and bacteria, and are known to transmit Borrelia
Borrelia
Borrelia is a genus of bacteria of the spirochete phylum. It causes borreliosis, a zoonotic, vector-borne disease transmitted primarily by ticks and some by lice, depending on the species...

bacteria to birds, there is no evidence that this affects the fitness of Blackbirds except when they are exhausted and run down after migration.

In culture

The Common Blackbird was seen as a sacred though destructive bird in Classical Greek folklore, and was said to die if it consumed pomegranate
Pomegranate
The pomegranate , Punica granatum, is a fruit-bearing deciduous shrub or small tree growing between five and eight meters tall.Native to the area of modern day Iran, the pomegranate has been cultivated in the Caucasus since ancient times. From there it spread to Asian areas such as the Caucasus as...

. Like many other small birds, it has in the past been trapped in rural areas at its night roosts as an easily available addition to the diet, and in medieval times the conceit of placing live birds under a pie crust just before serving may have been the origin of the familiar nursery rhyme
Nursery rhyme
The term nursery rhyme is used for "traditional" poems for young children in Britain and many other countries, but usage only dates from the 19th century and in North America the older ‘Mother Goose Rhymes’ is still often used.-Lullabies:...

:

Sing a song of sixpence,

A pocket full of rye;

Four and twenty blackbirds baked in a pie!

When the pie was opened the birds began to sing,

Oh wasn't that a dainty dish to set before the king?


The Common Blackbird's melodious, distinctive song is the theme of the poem Adlestrop by Edward Thomas
Edward Thomas (poet)
Philip Edward Thomas was an Anglo-Welsh writer of prose and poetry. He is commonly considered a war poet, although few of his poems deal directly with his war experiences. Already an accomplished writer, Thomas turned to poetry only in 1914...

;
And for that minute a blackbird sang

Close by, and round him, mistier,

Farther and farther, all the birds

Of Oxfordshire and Gloucestershire.

The song is also recalled in the Beatles
The Beatles
The Beatles were an English rock band, active throughout the 1960s and one of the most commercially successful and critically acclaimed acts in the history of popular music. Formed in Liverpool, by 1962 the group consisted of John Lennon , Paul McCartney , George Harrison and Ringo Starr...

 track "Blackbird
Blackbird (song)
"Blackbird" is a Beatles song from the double-disc album The Beatles . Blackbird was written by Paul McCartney, but credited to Lennon–McCartney.-Origins:...

":

Blackbird singing in the dead of night,

Take these broken wings and learn to fly

All your life,

You were only waiting for this moment to arise.


The Common Blackbird, unlike many black creatures, is not normally seen as a symbol of bad luck, but R. S. Thomas
R. S. Thomas
Ronald Stuart Thomas was a Welsh poet and Anglican clergyman, noted for his nationalism, spirituality and deep dislike of the anglicisation of Wales...

 wrote that there is "a suggestion of dark Places about it", and it symbolised resignation in the 17th century tragic
Tragedy
Tragedy is a form of art based on human suffering that offers its audience pleasure. While most cultures have developed forms that provoke this paradoxical response, tragedy refers to a specific tradition of drama that has played a unique and important role historically in the self-definition of...

 play The Duchess of Malfi
The Duchess of Malfi
The Duchess of Malfi is a macabre, tragic play written by the English dramatist John Webster in 1612–13. It was first performed privately at the Blackfriars Theatre, then before a more general audience at The Globe, in 1613-14...

; an alternate connotation is vigilance, the bird's clear cry warning of danger.

The Common Blackbird is the national bird of Sweden
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

, which has a breeding population of 1–2 million pairs, and was featured on a 30 öre
Öre
Öre is the discontinued centesimal subdivision of the Swedish krona. The plural and singular are the same in the indefinite forms, whereas the singular definite form is öret and the plural definite is örena. The name derives from the Latin aureus , the name of a coin worth 25 denarii...

 Christmas
Christmas
Christmas or Christmas Day is an annual holiday generally celebrated on December 25 by billions of people around the world. It is a Christian feast that commemorates the birth of Jesus Christ, liturgically closing the Advent season and initiating the season of Christmastide, which lasts twelve days...

 postage stamp
Postage stamp
A postage stamp is a small piece of paper that is purchased and displayed on an item of mail as evidence of payment of postage. Typically, stamps are made from special paper, with a national designation and denomination on the face, and a gum adhesive on the reverse side...

 in 1970.

Further reading

  • Snow, David W. (1987). The Blackbird. Shire Natural History ISBN 0-85263-854-X

Species information


Sounds and videos

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