The
American Robin or
North American Robin (
Turdus migratorius) is a
migratoryBird 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...
songbirdA songbird is a bird belonging to the suborder Passeri of the perching birds . Another name that is sometimes seen as scientific or vernacular name is Oscines, from Latin oscen, "a songbird"...
of the
thrushThe 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...
family. It is named after the
European RobinThe European Robin , most commonly known in Anglophone Europe simply as the Robin, is a small insectivorous passerine bird that was formerly classed as a member of the thrush family , but is now considered to be an Old World flycatcher...
because of its reddish-orange breast, though the two species are not closely related, with the European robin belonging to the
flycatcherThe Old World flycatcher family Muscicapidae is a large family of small passerine birds mostly restricted to the Old World. These are mainly small arboreal insectivores, many of which, as the name implies, take their prey on the wing.-Characteristics:...
family. The American Robin is widely distributed throughout
North AmericaNorth 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...
, wintering south of Canada from
FloridaFlorida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
to central
MexicoThe United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
and along the
PacificThe 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...
Coast. It is the
state bird of
ConnecticutConnecticut is a state in the New England region of the northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, and the state of New York to the west and the south .Connecticut is named for the Connecticut River, the major U.S. river that approximately...
,
MichiganMichigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....
, and
WisconsinWisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...
. It has seven subspecies, but only
T. m. confinis in the southwest is particularly distinctive, with pale gray-brown underparts.
The American Robin is active mostly during the day and assembles in large flocks at night. Its diet consists of
invertebrateAn 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 (such as
beetle grubsA larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...
and
caterpillarCaterpillars 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),
fruitIn 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 and
berriesThe 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....
. It is one of the earliest bird species to lay eggs, beginning to breed shortly after returning to its summer range from its winter range. Its nest consists of long coarse grass, twigs, paper, and feathers, and is smeared with mud and often cushioned with grass or other soft materials. It is among the first birds to sing at dawn, and its song consists of several discrete units that are repeated.
The adult robin is preyed upon by
hawkThe term hawk can be used in several ways:* In strict usage in Australia and Africa, to mean any of the species in the subfamily Accipitrinae, which comprises the genera Accipiter, Micronisus, Melierax, Urotriorchis and Megatriorchis. The large and widespread Accipiter genus includes goshawks,...
s,
catThe 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...
s and larger
snakeSnakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...
s, but when feeding in flocks, it can be vigilant and watch other birds for reactions to
predatorsIn ecology, predation describes a biological interaction where a predator feeds on its prey . Predators may or may not kill their prey prior to feeding on them, but the act of predation always results in the death of its prey and the eventual absorption of the prey's tissue through consumption...
.
Brown-headed CowbirdThe Brown-headed Cowbird is a small brood parasitic icterid of temperate to subtropical North America. They are permanent residents in the southern parts of their range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or...
s lay eggs in robin nests (see
brood parasiteBrood 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...
), but robins usually reject the cowbird eggs.
Taxonomy
This species was first described in 1766 by Carl Linnaeus in the
twelfth editionThe 12th edition of was the last edition of to be overseen by its author, Carl Linnaeus. It was published in three volumes, with parts appearing from 1766 to 1768...
of his
Systema NaturaeThe book was one of the major works of the Swedish botanist, zoologist and physician Carolus Linnaeus. The first edition was published in 1735...
as
Turdus migratorius. The binomial name derives from two
LatinLatin 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
migratorius from
migrare "to go". The term 'robin' for this species has been recorded since at least 1703. There are about 65 species of medium to large thrushes in the genus
Turdus, characterized by rounded heads, longish pointed wings, and usually melodious songs. A study of the
mitochondrialIn cell biology, a mitochondrion is a membrane-enclosed organelle found in most eukaryotic cells. These organelles range from 0.5 to 1.0 micrometers in diameter...
cytochrome bCytochromes are, in general, membrane-bound hemoproteins that contain heme groups and carry out electron transport.They are found either as monomeric proteins or as subunits of bigger enzymatic complexes that catalyze redox reactions....
geneA gene is a molecular unit of heredity of a living organism. It is a name given to some stretches of DNA and RNA that code for a type of protein or for an RNA chain that has a function in the organism. Living beings depend on genes, as they specify all proteins and functional RNA chains...
indicates that the American Robin is not part of the Central/South American
cladeA clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...
of
Turdus thrushes; instead it shows genetic similarities to the
Kurrichane ThrushThe Kurrichane Thrush is a species of bird in the Turdidae family.It is found in Angola, Botswana, Burundi, Democratic Republic of the Congo, Lesotho, Malawi, Mozambique, Namibia, South Africa, Swaziland, Tanzania, Zambia, and Zimbabwe....
,
T. libonyanus, and the
Olive ThrushThe Olive Thrush is, in its range, one of the most common members of the thrush family . It occurs in east African highlands from Eritrea and Ethiopia in north to the Cape of Good Hope in south...
,
T. olivaceus, both
AfricaAfrica is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
n species. This conflicts with a 2007
DNADeoxyribonucleic acid is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in...
study of 60 of 65
Turdus species which places the American Robin's closest relative as the
Rufous-collared RobinThe Rufous-collared Robin is a species of bird in the Turdidae family.It is endemic to highlands of Middle America, south of the Isthmus of Tehuantepec, occurring in El Salvador, Guatemala, Honduras, and Chiapas state in Mexico. Its closest relative is the American Robin, and like that species,...
(
T. rufitorques) of
Central AmericaCentral America is the central geographic region of the Americas. It is the southernmost, isthmian portion of the North American continent, which connects with South America on the southeast. When considered part of the unified continental model, it is considered a subcontinent...
. Though having distinct
plumagePlumage 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...
, the two species are similar in vocalization and behavior. Beyond this, it lies in a small group of four species of otherwise Central American distribution, suggesting it recently spread northwards into North America.
Seven subspecies of American Robin are recognized. These subspecies intergrade and are only weakly defined.
- T. m. migratorius, the nominate subspecies, breeds in the US and Canada, other than down the west coast, to the edge of the tundra
In physical geography, tundra is a biome where the tree growth is hindered by low temperatures and short growing seasons. The term tundra comes through Russian тундра from the Kildin Sami word tūndâr "uplands," "treeless mountain tract." There are three types of tundra: Arctic tundra, alpine...
from AlaskaAlaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
and northern Canada east to New EnglandNew England is a region in the northeastern corner of the United States consisting of the six states of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut...
and then south to MarylandMaryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...
, North CarolinaNorth Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...
and northwest VirginiaThe Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...
. It winters in southern coastal Alaska, southern Canada, most of the US, BermudaBermuda is a British overseas territory in the North Atlantic Ocean. Located off the east coast of the United States, its nearest landmass is Cape Hatteras, North Carolina, about to the west-northwest. It is about south of Halifax, Nova Scotia, Canada, and northeast of Miami, Florida...
, the Bahamas and eastern MexicoThe United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
.
- T. m. nigrideus breeds from coastal northern 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....
to LabradorLabrador is the distinct, northerly region of the Canadian province of Newfoundland and Labrador. It comprises the mainland portion of the province, separated from the island of Newfoundland by the Strait of Belle Isle...
and Newfoundland and winters from southern Newfoundland south through most of the eastern US states to southern LouisianaLouisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...
, southern MississippiMississippi is a U.S. state located in the Southern United States. Jackson is the state capital and largest city. The name of the state derives from the Mississippi River, which flows along its western boundary, whose name comes from the Ojibwe word misi-ziibi...
and northern GeorgiaGeorgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...
. It is uniformly darker or blackish on the head, with a dark gray back. The underparts are slightly more red than those of the nominate subspecies.
- T. m. achrusterus breeds from southern Oklahoma
Oklahoma is a state located in the South Central region of the United States of America. With an estimated 3,751,351 residents as of the 2010 census and a land area of 68,667 square miles , Oklahoma is the 28th most populous and 20th-largest state...
east to Maryland and western Virginia and south to northern FloridaFlorida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
and the Gulf statesThe Gulf Coast of the United States, sometimes referred to as the Gulf South, South Coast, or 3rd Coast, comprises the coasts of American states that are on the Gulf of Mexico, which includes Texas, Louisiana, Mississippi, Alabama, and Florida and are known as the Gulf States...
. It winters through much of the southern part of the breeding range. It is smaller than the nominate subspecies. The black feathers of the forehead and crown have pale gray tips. The underparts are paler than those of the nominate subspecies.
- T. m. caurinus breeds in southeast Alaska through coastal British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...
to Washington and northwest OregonOregon is a state in the Pacific Northwest region of the United States. It is located on the Pacific coast, with Washington to the north, California to the south, Nevada on the southeast and Idaho to the east. The Columbia and Snake rivers delineate much of Oregon's northern and eastern...
. It winters from southwest British Columbia south to central and southern CaliforniaCalifornia is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
and east to northern IdahoIdaho is a state in the Rocky Mountain area of the United States. The state's largest city and capital is Boise. Residents are called "Idahoans". Idaho was admitted to the Union on July 3, 1890, as the 43rd state....
. It is very slightly smaller than the nominate subspecies and very dark-headed. The white on the tips of the outer two tail feathers is restricted.
- T. m. propinquus breeds from southeast British Columbia, southern Alberta
Alberta is a province of Canada. It had an estimated population of 3.7 million in 2010 making it the most populous of Canada's three prairie provinces...
, southwest SaskatchewanSaskatchewan is a prairie province in Canada, which has an area of . Saskatchewan is bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, and on the south by the U.S. states of Montana and North Dakota....
south to southern California and northern Baja CaliforniaBaja California officially Estado Libre y Soberano de Baja California is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is both the northernmost and westernmost state of Mexico. Before becoming a state in 1953, the area was known as the North...
. It winters throughout much of the southern breeding range and south to Baja California. It is the same size as or slightly larger than nominate T. m. migratorius, but paler and tinged more heavily brownish-gray. It has very little white on the tip of the outermost tail feather. Some birds, probably females, lack almost any red below. Males are usually darker and may show pale or whitish sides to the head.
- T. m. confinis breeds above 1000 meters (3300 ft) in the highlands of southern Baja California. This form is particularly distinctive, with pale gray-brown underparts. It is relatively small, and the palest subspecies, with uniform pale gray-brown on the head, face and upperparts. It usually lacks any white spots to the tips of the outer tail feathers, which have white edges. It is sometimes classed as a separate species, the San Lucas Robin, but the American Ornithologists' Union
The American Ornithologists' Union is an ornithological organization in the USA. Unlike the National Audubon Society, its members are primarily professional ornithologists rather than amateur birders...
regards it as only a subspecies, albeit in a different group from the other races.
- T. m. phillipsi is resident in Mexico south to central Oaxaca
Oaxaca , , officially Estado Libre y Soberano de Oaxaca is one of the 31 states which, along with the Federal District, comprise the 32 federative entities of Mexico. It is divided into 571 municipalities; of which 418 are governed by the system of customs and traditions...
. It is slightly smaller than propinquus but has a larger bill; the male's underparts are less brick-red than the nominate subspecies, and have a rustier tone.
Description
The nominate subspecies of the American Robin is 23–28 centimeters (10–11 in) long with a wingspan ranging from 31–41 centimeters (12.2–16 in), and averages about 77 grams (2.7 oz) in weight. The head varies from jet black to gray, with white eye arcs and white
superciliaThe supercilium is a plumage feature found on the heads of some bird species. It is a stripe which runs from the base of the bird's beak above its eye, finishing somewhere towards the rear of the bird's head. Also known as an "eyebrow", it is distinct from the eyestripe, which is a line which runs...
. The throat is white with black streaks, and the belly and undertail
covertsA covert feather on a bird is one of a set of feathers, called coverts, which as the name implies, cover other feathers. The coverts help to smooth airflow over the wings and tail.- Wing-coverts :...
are white. The Robin has a brown back and a reddish-orange breast, varying from a rich red maroon to peachy orange. The bill is mainly yellow with a variably dark tip, the dusky area becoming more extensive in winter, and the legs and feet are brown.
The sexes are similar, but the female tends to be duller than the male, with a brown tint to the head, brown upperparts and less bright underparts. However, some birds cannot be safely sexed on plumage alone. The juvenile is paler in color than the adult male and has dark spots on its breast, and whitish wing coverts. First-year birds are not easily distinguishable from adults, but they tend to be duller, and a small percentage retains a few juvenile wing coverts or other feathers.
Distribution and habitat
This bird breeds throughout most of North America, from
AlaskaAlaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...
and
CanadaCanada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...
southward to northern
FloridaFlorida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...
and
MexicoThe United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
. While Robins occasionally overwinter in the northern part of the United States and southern Canada, most migrate to winter south of Canada from Florida and the
Gulf CoastThe Gulf Coast of the United States, sometimes referred to as the Gulf South, South Coast, or 3rd Coast, comprises the coasts of American states that are on the Gulf of Mexico, which includes Texas, Louisiana, Mississippi, Alabama, and Florida and are known as the Gulf States...
to central Mexico, as well as along the
PacificThe 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...
Coast. Most depart south by the end of August and begin to return north in February and March (exact dates vary with latitude and climate).
Despite being depicted in the film
Mary PoppinsMary Poppins is a 1964 musical film starring Julie Andrews and Dick Van Dyke, produced by Walt Disney, and based on the Mary Poppins books series by P. L. Travers with illustrations by Mary Shepard. The film was directed by Robert Stevenson and written by Bill Walsh and Don DaGradi, with songs by...
"feathering its nest" in
LondonLondon is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...
, this species is actually a rare
vagrantVagrancy is a phenomenon in biology whereby individual animals appear well outside their normal range; individual animals which exhibit vagrancy are known as vagrants. The term accidental is sometimes also used...
to western
EuropeEurope 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...
, where the majority of records, more than 20, have been in
BritainGreat 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...
. In autumn 2003, migration was displaced eastwards leading to massive movements through the eastern US, and presumably this is what led to no fewer than three American Robins being found in Britain, with two attempting to overwinter in 2003–2004, although one was taken by a Sparrowhawk. The most recent sighting in Britain occurred in January 2007.
This species has also occurred as a vagrant to
GreenlandGreenland is an autonomous country within the Kingdom of Denmark, located between the Arctic and Atlantic Oceans, east of the Canadian Arctic Archipelago. Though physiographically a part of the continent of North America, Greenland has been politically and culturally associated with Europe for...
,
JamaicaJamaica is an island nation of the Greater Antilles, in length, up to in width and 10,990 square kilometres in area. It is situated in the Caribbean Sea, about south of Cuba, and west of Hispaniola, the island harbouring the nation-states Haiti and the Dominican Republic...
,
HispaniolaHispaniola is a major island in the Caribbean, containing the two sovereign states of the Dominican Republic and Haiti. The island is located between the islands of Cuba to the west and Puerto Rico to the east, within the hurricane belt...
,
Puerto RicoPuerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...
and
BelizeBelize is a constitutional monarchy and the northernmost country in Central America. Belize has a diverse society, comprising many cultures and languages. Even though Kriol and Spanish are spoken among the population, Belize is the only country in Central America where English is the official...
. Vagrants to Europe, where identified to subspecies, are nominate
T. m. migratorius, but the Greenland birds also included
T. m. nigrideus, and some of the southern overshots may have been
T. m. achrusterus.
The American Robin's breeding habitat is woodland and more open farmland and urban areas. It breeds only rarely in the southern United States and there prefers large shade trees on lawns. Its winter habitat is similar but includes more open areas.
Conservation status
The American Robin has an extensive range, estimated at 16 million square kilometers (6 million square miles), and a large population of about 320 million individuals. 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 ConcernLeast 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...
. At one point, the bird was killed for its meat, but it is now protected throughout its range in the United States by the
Migratory Bird ActThe Migratory Bird Treaty Act of 1918 , codified at , is a United States federal law, at first enacted in 1916 in order to implement the convention for the protection of migratory birds between the United States and Great Britain...
.
Birds in central California of the subspecies
propinquus are considered to be still increasing their range, and this is probably the case elsewhere in the U.S.A.
Disease
The American Robin is a known reservoir (carrier) for
West Nile virusWest Nile virus is a virus of the family Flaviviridae. Part of the Japanese encephalitis antigenic complex of viruses, it is found in both tropical and temperate regions. It mainly infects birds, but is known to infect humans, horses, dogs, cats, bats, chipmunks, skunks, squirrels, domestic...
. While crows and jays are often the first noticed deaths in an area with West Nile virus, the American Robin is suspected to be a key host, and holds a larger responsibility for the transmission of the virus to humans. This is because while crows and jays die quickly from the virus, the American Robin survives the virus longer, hence spreading it to more mosquitoes, which then transmit the virus to humans and other species.
Behavior
The American Robin is active mostly during the day, and on its winter grounds it assembles in large flocks at night to roost in trees in secluded swamps or dense vegetation. The flocks break up during the day when the birds feed on fruits and berries in smaller groups. During the summer, the American Robin defends a breeding territory and is less social.
Diet
The American Robin's diet generally consists of around 40 percent invertebrates, such as
beetle grubsA larva is a distinct juvenile form many animals undergo before metamorphosis into adults. Animals with indirect development such as insects, amphibians, or cnidarians typically have a larval phase of their life cycle...
,
caterpillarCaterpillars 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
grasshopperThe grasshopper is an insect of the suborder Caelifera in the order Orthoptera. To distinguish it from bush crickets or katydids, it is sometimes referred to as the short-horned grasshopper...
s, and 60 percent wild and cultivated
fruitIn 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 and
berriesThe 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....
. They will flock to fermented
PyracanthaPyracantha 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...
berries, and in sufficient quantities will exhibit intoxicated behavior such as falling over while walking. It forages primarily on the ground for soft-bodied invertebrates, and finds
wormThe term worm refers to an obsolete taxon used by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, and stems from the Old English word wyrm. Currently it is used to describe many different distantly-related animals that typically have a long cylindrical...
s by sight, pouncing on them and then pulling them up. Nestlings are fed mainly on worms and other soft-bodied animal prey. In some areas, Robins, particularly of the coastal race
T. m. caurinus will feed on beaches, taking insects and small mollusks.
The Robin is frequently seen running across lawns, picking up earthworms by sight, and its
running and stopping behavior is a distinguishing characteristic. It hunts visually, not by hearing.
Threats
Juvenile Robins and eggs are preyed upon by
squirrelSquirrels belong to a large family of small or medium-sized rodents called the Sciuridae. The family includes tree squirrels, ground squirrels, chipmunks, marmots , flying squirrels, and prairie dogs. Squirrels are indigenous to the Americas, Eurasia, and Africa and have been introduced to Australia...
s,
snakeSnakes are elongate, legless, carnivorous reptiles of the suborder Serpentes that can be distinguished from legless lizards by their lack of eyelids and external ears. Like all squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales...
s, and some birds, such as
Blue JayThe Blue Jay is a passerine bird in the family Corvidae, native to North America. It is resident through most of eastern and central United States and southern Canada, although western populations may be migratory. It breeds in both deciduous and coniferous forests, and is common near and in...
s,
Common GrackleThe Common Grackle, Quiscalus quiscula, is a large icterid.-Description:The long adult has a long dark bill, pale yellowish eyes and a long tail; its feathers appear black with purple, green or blue iridescence on the head, and primarily bronze shine in the body plumage...
s,
American CrowThe American Crow is a large passerine bird species of the family Corvidae. It is a common bird found throughout much of North America...
s and
Common RavenThe 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...
s. Adults are primarily taken by
hawkThe 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,
catThe 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...
s and larger snakes, although when feeding in flocks, the American Robin is able to remain vigilant and watch other flock members for reactions to predators.
The American Robin is known to be a rejecter of
cowbirdCowbirds are birds belonging to the genus Molothrus in the family Icteridae. They are brood parasitic New World birds which are unrelated to the Old World cuckoos, one of which, the Common Cuckoo, is the best-known brood parasitic bird....
eggs, so brood parasitism by the
Brown-headed CowbirdThe Brown-headed Cowbird is a small brood parasitic icterid of temperate to subtropical North America. They are permanent residents in the southern parts of their range; northern birds migrate to the southern United States and Mexico in winter, returning to their summer habitat around March or...
is rare. Even when it occurs, the parasite's chick does not normally survive to fledging. In a study of 105 juvenile Robins, 77.1% were infected with one or more species of endoparasite, with
Syngamus species the most commonly encountered, found in 57.1% of the birds.
Breeding
The American Robin begins to breed shortly after returning to its summer range. It is one of the first North American bird species to lay eggs, and normally has two to three broods per breeding season, which lasts from April to July.
The nest is most commonly located 1.5–4.5 meters (5–15 ft) above the ground in a dense bush or in a fork between two tree branches, and is built by the female alone. The outer foundation consists of long coarse grass, twigs, paper, and feathers. This is lined with smeared mud and cushioned with fine grass or other soft materials. A new nest is built for each brood, and in northern areas the first clutch is usually placed in an evergreen tree or shrub while later broods are placed in
deciduousDeciduous means "falling off at maturity" or "tending to fall off", and is typically used in reference to trees or shrubs that lose their leaves seasonally, and to the shedding of other plant structures such as petals after flowering or fruit when ripe...
trees. The American Robin does not shy away from nesting close to human habitation.
A clutch consists of three to five light blue
eggsAn 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...
, and is
incubatedIncubation refers to the process by which certain oviparous animals hatch their eggs, and to the development of the embryo within the egg. The most vital factor of incubation is the constant temperature required for its development over a specific period. Especially in domestic fowl, the act of...
by the female alone. The eggs hatch after 14 days, and the chicks leave the nest a further two weeks later. The chicks are fed worms, insects, and berries. Waste accumulation does not occur in the nest because adults collect and take away. Chicks are fed and raise tails for elimination of waste, a solid white clump, that is collected by a parent prior to flying off. All chicks in the brood leave the nest within two days of each other. The
altricialAltricial, 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 naked and have their eyes closed for the first few days after hatching. While the chicks are still young, the mother broods them continuously. When they are older, the mother will brood them only at night or during bad weather. Even after leaving the nest, the juveniles will follow their parents around and beg food from them. Juveniles become capable of sustained flight two weeks after fledging.
The adult male and female both are active in protecting and feeding the fledged chicks until they learn to forage on their own. The adult Robin gives alarm calls and dive-bombs predators, including domestic cats, dogs and humans that come near the young birds. The fledglings are able to fly short distances after leaving the nest. The wings of juvenile birds develop rapidly, and it only takes a couple of weeks for them to become proficient at flying. The
cryptically coloredCamouflage is a method of concealment that allows an otherwise visible animal, military vehicle, or other object to remain unnoticed, by blending with its environment. Examples include a leopard's spotted coat, the battledress of a modern soldier and a leaf-mimic butterfly...
young birds perch in bushes or trees for protection from predators. Bird banders have found that only 25% of young Robins survive the first year. The longest known lifespan in the wild of an American Robin is 14 years; the average lifespan is about 2 years.
Vocalization
The male American Robin, as with many thrushes, has a complex and almost continuous song. Its song is commonly described as a
cheerily carol, made up of discrete units, often repeated, and spliced together into a string with brief pauses in between. The song varies regionally, and its style varies by time of day. The song period is from early March in California to late July or early August; some birds, particularly in the east, sing occasionally into September or later. The American Robin is often among the first songbirds singing as dawn rises or hours before, and last as evening sets in. It usually sings from a high perch in a tree. The song of
T. m. confinis is weaker than that of the nominate subspecies, and lacks any clear notes.
In addition to its song, the American Robin has a number of calls used for communicating specific information. When a ground predator approaches but does not directly threaten, Robins will make a
PEEK!! tut tut tut tut... warning call, often preceded by an explosive
seeech each-each-each. When a nest or Robin is being directly threatened, another
he-he-he-he call is used, which sounds like a horse's whinny. Even during nesting season, when Robins exhibit mostly competitive and territorial behavior, they may still band together to drive away a predator.
In culture
The American Robin is the
state bird of
ConnecticutConnecticut is a state in the New England region of the northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, and the state of New York to the west and the south .Connecticut is named for the Connecticut River, the major U.S. river that approximately...
,
MichiganMichigan is a U.S. state located in the Great Lakes Region of the United States of America. The name Michigan is the French form of the Ojibwa word mishigamaa, meaning "large water" or "large lake"....
and
WisconsinWisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...
. It was also depicted on the 1986 Birds of Canada series
Canadian $2 noteThe Canadian dollar is the currency of Canada. As of 2007, the Canadian dollar is the 7th most traded currency in the world. It is abbreviated with the dollar sign $, or C$ to distinguish it from other dollar-denominated currencies...
, but this note has since been withdrawn.
Robin's egg blueThe color robin egg blue is displayed at right. It is a web-safe color and an official Crayola color.Robin egg blue, also called eggshell blue, approximates the shade of the eggs laid by the American Robin....
is a color named after the bird's eggs.
The American Robin has a place in Native American mythology. The story of how the robin got its red breast by fanning the dying flames of a campfire to save a Native American man and a boy is similar to those that surround the European Robin. The Tlingit people of Northwestern North America held it to be a culture-hero created by Raven to please the people with its song. One of the Houses of the
Raven TribeThe Ganhada is the name for the Raven "clan" in the language of the Tsimshian nation of British Columbia, Canada, and southeast Alaska. It is considered analogous or identical to the Ganada Tribe of the Nisga'a nation in British Columbia and the Frog clan among B.C.'s Gitxsan nation...
from the
Nisga'aThe Nisga’a , often formerly spelled Nishga and spelled in the Nisga’a language as Nisga’a, are an Indigenous nation or First Nation in Canada. They live in the Nass River valley of northwestern British Columbia. Their name comes from a combination of two Nisga’a words: Nisk’-"top lip" and...
Nation holds the Robin as a House Crest.
The
Peace Bridge robinsThe Peace Bridge robins were a family of American Robins that nested for several years in the 1930s on the Canadian side of the Peace Bridge, which connects Buffalo, New York to Fort Erie, Ontario...
were a family of American robins that attracted minor publicity in the mid-1930s for their prominent nest on the Canadian side of the
Peace BridgeThe Peace Bridge is an international bridge between Canada and the United States at the east end of Lake Erie at the source of the Niagara River, about upriver of Niagara Falls. It connects the City of Buffalo, New York, in the United States to the Town of Fort Erie, Ontario, in Canada...
connecting
Buffalo, New YorkBuffalo is the second most populous city in the state of New York, after New York City. Located in Western New York on the eastern shores of Lake Erie and at the head of the Niagara River across from Fort Erie, Ontario, Buffalo is the seat of Erie County and the principal city of the...
to
Fort Erie, OntarioFort Erie is a town on the Niagara River in the Niagara Region, Ontario, Canada. It is located directly across the river from Buffalo, New York....
.
The Robin is considered a symbol of spring. A well-known example is a poem by
Emily DickinsonEmily Elizabeth Dickinson was an American poet. Born in Amherst, Massachusetts, to a successful family with strong community ties, she lived a mostly introverted and reclusive life...
, "I Dreaded That First Robin So". Among other 19th-century poems about the first robin of spring is "The First Robin" by Dr. William H. Drummond, which according to the author's wife is based on a
QuebecQuebec 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....
superstition that whoever sees the first robin of spring will have good luck.
American popular songs featuring this bird include "
When the Red, Red Robin (Comes Bob, Bob, Bobbin' Along)"When the Red, Red Robin " was a 1926 popular song written by songwriter Harry M. Woods. The song was an instant hit for singers like "Whispering" Jack Smith, Cliff Edwards and the Ipana Troubadors...
", written by
Harry M. WoodsHenry MacGregor Woods was a Tin Pan Alley songwriter and pianist. Woods is sometimes credited as Harry Woods.-Early life:...
and a hit for
Al JolsonAl Jolson was an American singer, comedian and actor. In his heyday, he was dubbed "The World's Greatest Entertainer"....
and others, and "
Rockin' RobinThis article is about the song. For the wrestler, see Rockin' Robin ."Rockin' Robin" is a song written by Leon René under the pseudonym Jimmie Thomas and recorded by Bobby Day in 1958. It was Day's only hit single, becoming a number-two hit on the Billboard Hot 100...
", written by Roger Thomas and a hit for
Bobby DayBobby Day , was an early African American rock and roll and R&B musician.Born Robert James Byrd, , in Fort Worth, Texas, he moved to Los Angeles, California, at the age of 15...
and others.
Although the
comic-bookComics denotes a hybrid medium having verbal side of its vocabulary tightly tied to its visual side in order to convey narrative or information only, the latter in case of non-fiction comics, seeking synergy by using both visual and verbal side in...
superhero
RobinRobin is the name of several fictional characters appearing in comic books published by DC Comics, originally created by Bob Kane, Bill Finger and Jerry Robinson, as a junior counterpart to DC Comics superhero Batman...
was inspired by an
N. C. WyethNewell Convers Wyeth , known as N.C. Wyeth, was an American artist and illustrator. He was the pupil of artist Howard Pyle and became one of America's greatest illustrators...
illustration of
Robin HoodRobin Hood was a heroic outlaw in English folklore. A highly skilled archer and swordsman, he is known for "robbing from the rich and giving to the poor", assisted by a group of fellow outlaws known as his "Merry Men". Traditionally, Robin Hood and his men are depicted wearing Lincoln green clothes....
, a later version had his mother nicknaming him Robin because he was born on the first day of spring. His red shirt suggests the bird's red breast.
External links