Song Sparrow
Encyclopedia
The Song Sparrow is a medium-sized American sparrow
American sparrow
American sparrows are a group of mainly New World passerine birds, forming part of the family Emberizidae. American sparrows are seed-eating birds with conical bills, brown or gray in color, and many species have distinctive head patterns....

.

Adults have brown upperparts with dark streaks on the back and are white underneath with dark streaking and a dark brown spot in the middle of the breast. They have a brown cap and a long brown rounded tail. Their face is grey with a streak through the eye. For subspecies, see below.

In the field, they are most easily confused with its congener the Lincoln's Sparrow
Lincoln's Sparrow
The Lincoln's Sparrow, Melospiza lincolnii, is a medium-sized sparrow.Adults have dark-streaked olive-brown upperparts with a light brown breast with fine streaks, a white belly, and a white throat. They have a brown cap with a grey stripe in the middle, olive-brown wings, and a narrow tail. Their...

, and the Savannah Sparrow
Savannah Sparrow
The Savannah Sparrow is a small American sparrow. It is the only widely accepted member of the genus Passerculus...

. The former can be recognized by its shorter, greyer tail and the differently-patterned head, the brown cheeks forming a clear-cut angular patch. The Savannah Sparrow has a forked tail and yellowish flecks on the face when seen up close.

Although they are a habitat generalist, their favorite habitat is brushy areas and marshes, including salt marshes, across most of Canada
Canada
Canada 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...

 and the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. They also thrive in human areas, such as in suburbs, along edges in agricultural areas, and along roadsides. In southern locations, they are permanent residents. 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...

 to the southern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 or Mexico
Mexico
The 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...

, where there is also a local population resident all year round. The Song Sparrow is a very rare vagrant to western 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...

, with a few recorded in Great Britain
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...

 and Norway
Norway
Norway , officially the Kingdom of Norway, is a Nordic unitary constitutional monarchy whose territory comprises the western portion of the Scandinavian Peninsula, Jan Mayen, and the Arctic archipelago of Svalbard and Bouvet Island. Norway has a total area of and a population of about 4.9 million...

.

These birds forage on the ground, in shrubs or in very shallow water. They mainly eat insects and seeds. Birds in salt marshes may also eat small crustaceans. They nest either in a sheltered location on the ground or in trees or shrubs.

Song

The male of this species uses its melodious and fairly complex song to declare ownership of its territory and to attract females.

The Song Sparrow's song consists of a combination of repeated notes, quickly passing isolated notes, and trills. The songs are very crisp, clear, and precise, making them easily distinguishable by human ears. A particular song is determined not only by pitch and rhythm but also by the timbre of the trills. Although one bird will know many songs—as many as 20 different tunes with as many as 1000 improvised variations on the basic theme,—unlike 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 Song Sparrow usually repeats the same song many times before switching to a different song.

Song Sparrows typically learn their songs from a handful of other birds that have neighboring territories. They are most likely to learn songs that are shared in common between these neighbors. Ultimately, they will choose a territory close to or replacing the birds that they have learned from. This allows the Song Sparrows to address their neighbors with songs shared in common with those neighbors. It has been demonstrated that Song Sparrows are able to distinguish neighbors from strangers on the basis of song, and also that females are able to distinguish (and prefer) their mate's songs from those of other neighboring birds, and they prefer songs of neighboring birds to those of strangers.

Other birds such as mockingbird
Mockingbird
Mockingbirds are a group of New World passerine birds from the Mimidae family. They are best known for the habit of some species mimicking the songs of other birds and the sounds of insects and amphibians, often loudly and in rapid succession. There are about 17 species in three genera...

s are not able to effectively imitate the Song Sparrow's song.

Predators and parasites

Common predators of the Song Sparrow include cats, hawks, and owls
OWLS
OWLS is a mnemonic used by general aviation airplane pilots to assess an unprepared surface for a precautionary landing.Like all mnemonics this check has become part of aviation culture and folklore.OWLS:* Obstacles* Wind direction...

. Snakes, dogs, and the american kestrel
American Kestrel
The American Kestrel , sometimes colloquially known as the Sparrow Hawk, is a small falcon, and the only kestrel found in the Americas. It is the most common falcon in North America, and is found in a wide variety of habitats. At long, it is also the smallest falcon in North America...

 are treated ambiguously, suggesting that they are less of a threat. The Song Sparrow recognizes enemies by both instinctual and learned patterns (including cultural learning
Cultural learning
Cultural learning, also called cultural transmission, is the way a group of people or animals within a society or culture tend to learn and pass on new information...

), and adjusts its future behavior based on both its own experiences in encounters, and from watching other birds interact with the enemies. Comparisons of experiments on hand-raised birds to observation of birds in the wild suggest that the fear of owls and hawks is instinctual, but fear of cats is learned.

Song Sparrows' nests are parasitized by the brown-headed cowbird
Brown-headed Cowbird
The 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...

. The cowbirds' eggs closely resemble Song Sparrows' eggs, although the cowbirds' eggs are slightly larger. Song Sparrows recognize cowbirds as a threat and attack the cowbirds when they are near the nest. There is some evidence that this behavior is learned rather than instinctual. A more recent study found that the behavior of attacking female cowbirds near nests may actually attract cowbird parasitism because the female cowbirds use such behavior to identify female Song Sparrows that are more likely to successfully raise a cowbird chick. One study found that while cowbird parasitism did result in more nest failure, overall there were negligible effects on Song Sparrow populations when cowbirds were introduced to an island. The study pointed to a number of explanatory factors including Song Sparrows raising multiple broods, and Song Sparrows' abilities to raise cowbird chicks with their own.

Subspecies

The Song Sparrow is one of the birds with the most numerous subspecies 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...

, and even on a global scale rivals such species as the Horned Lark, the Yellow Wagtail, the Golden Whistler
Golden Whistler
The Australian Golden Whistler is a species of bird found in forest, woodland, mallee, mangrove and scrub in Australia and in mountain forest in the Snow Mountains in the Papua Province of Indonesia. Most populations are resident, but some in south-eastern Australia migrate north during the winter...

 or 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...

. 52 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...

 were named altogether, of which 24 are considered valid nowadays. It is a cryptic species.

Eastern group

Small, brownish, long-winged forms with strong black streaks.
  • Melospiza melodia melodia (Wilson, 1810). The nominate subspecies. Eastern half of North American range except coastal areas south from New York State. In winter, they migrate southeastwards. Very contrasting, very light with black streaks below, and grey margins to back feathers. This population includes the forms named as M. m. juddi Bishop, 1896; M. m. acadica Thayer and Bangs, 1914; M. m. beata (non Bangs) Todd, 1930; M. m. euphonia Wetmore, 1936; M. m. callima Oberholser, 1974; and M. m. melanchra Oberholser, 1974.
  • Melospiza melodia atlantica Todd, 1924. Inhabits the Atlantic Coast salt marshes from New York State southwards; does not migrate. Differs from nominate by a gray back. Includes M. m. rossignolii Bailey, 1936.
  • Melospiza melodia montana Henshaw, 1884. The subspecies west of melodia to the Rocky Mountains
    Rocky Mountains
    The Rocky Mountains are a major mountain range in western North America. The Rocky Mountains stretch more than from the northernmost part of British Columbia, in western Canada, to New Mexico, in the southwestern United States...

    . Some birds from the northern part of its range migrate to NW Mexico in winter. Similar to nominate, but larger, duller coloration and more slender bill. Includes M. m. fisherella Oberholser, 1911.

Northwestern group

Large, dark, diffuse dark streaks. A study of mtDNA allozyme
Allozyme
Variant forms of an enzyme that are coded by different alleles at the same locus are called allozymes. These are opposed to isozymes, which are enzymes that perform the same function, but which are coded by genes located at different loci....

 variation of most forms in this group concluded that they are of comparatively recent origin and that island populations are apparently derived independently from each other.
  • Melospiza melodia maxima Gabrielson & Lincoln, 1951, Giant Song Sparrow. W Aleutian Islands (Attu
    Attu Island
    Attu is the westernmost and largest island in the Near Islands group of the Aleutian Islands of Alaska, making it the westernmost point of land relative to Alaska and the United States. It was the site of the only World War II land battle fought on the incorporated territory of the United States ,...

     to Atka Island
    Atka Island
    Atka Island is the largest island in the Andreanof Islands of the Aleutian Islands of Alaska. The island is east of Adak Island. It is long and wide with a land area of , making it the 22nd largest island in the United States. The northeast of Atka Island contains the Korovin volcano which...

    ), resident. The largest subspecies, about the size of the California Towhee
    California Towhee
    The California Towhee, Melozone crissalis, is a bird of the family Emberizidae, native to the coastal regions of western Oregon and California in the United States and Baja California Sur in Mexico....

    . Very gray overall, long, diffuse streaks. Bill long and slender.
  • Melospiza melodia sanaka McGregor, 1901, Aleutian Song Sparrow. Aleutians from Seguam Island
    Seguam Island
    Seguam Island is a small volcanic island in the Andreanof Islands group in the Aleutian Islands of Alaska. The island is mountainous and oval shaped with a land area of . It is long and wide. The 2000 census reported a population of one person....

     east to Stepovak Bay
    Stepovak Bay
    Stepovak Bay is a bay located on the Alaska Peninsula, Alaska, on the Gulf of Alaska. It is framed by the Stepovak Bay group of volcanoes, a chain of 5 cinder cone volcanoes in the Aleutian Arc. The volcanoes include Kupreanof and four numbered volcanoes .It was named Stepovakho Bay or Stepof's Bay...

    , Alaska
    Alaska
    Alaska 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 islands to the south of Alaskan Peninsula; resident. Similar to maxima; grayer still and bill even more slender. Includes the Semidi Song Sparrow, M. m. semidiensis Brooks, 1919, which may be a distinct subspecies however. Also includes the population from Amak Island
    Amak Island
    Amak Island is an uninhabited island in Aleutians East Borough, Alaska, USA. The island lies north of the western tip of the Alaska Peninsula, and northwest of the mainland city of Cold Bay. The island's land area is and its maximum elevation is...

     named M. m. amaka Gabrielson & Lincoln, 1951 (Amak Song Sparrow) which was extirpated due to habitat destruction, apparently disappearing in the weeks around New Year's Eve, 1980/1981 (there were unconfirmed sightings in 1987 and 1988).
  • Melospiza melodia insignis Baird, 1869, Bischoff Song Sparrow. Kodiak
    Kodiak Island
    Kodiak Island is a large island on the south coast of the U.S. state of Alaska, separated from the Alaska mainland by the Shelikof Strait. The largest island in the Kodiak Archipelago, Kodiak Island is the second largest island in the United States and the 80th largest island in the world, with an...

    , Afognak
    Afognak
    Afognak is an island north of Kodiak Island in the U.S. state of Alaska. It is 43 miles from east to west and 23 miles from north to south and has a land area of , making it the 18th largest island in the United States. The coast is split by many long, narrow bays...

    , Sitkalidak, and Raspberry Islands, and Kukak and Katmai
    Katmai National Park and Preserve
    Katmai National Park and Preserve is a United States National Park in southern Alaska, notable for the Valley of Ten Thousand Smokes and for its brown bears. The park covers , being roughly the size of Wales. Most of this is a designated wilderness area, including of the park...

     on Alaska Peninsula; many migrate south in winter. A darkish grey, medium-sized form.
  • Melospiza melodia kenaiensis Ridgway, 1900, Kenai Song Sparrow. Resident; Pacific coast of Kenai Peninsula
    Kenai Peninsula
    The Kenai Peninsula is a large peninsula jutting from the southern coast of Alaska in the United States. The name Kenai is probably derived from Kenayskaya, the Russian name for Cook Inlet, which borders the peninsula to the west.-Geography:...

     and Prince William Sound
    Prince William Sound
    Prince William Sound is a sound off the Gulf of Alaska on the south coast of the U.S. state of Alaska. It is located on the east side of the Kenai Peninsula. Its largest port is Valdez, at the southern terminus of the Trans-Alaska Pipeline System...

     islands; some resident, some migrant. Smaller and browner than insignis.
  • Melospiza melodia caurina Ridgway, 1899, Yakutat Song Sparrow. Northern Gulf of Alaska
    Gulf of Alaska
    The Gulf of Alaska is an arm of the Pacific Ocean defined by the curve of the southern coast of Alaska, stretching from the Alaska Peninsula and Kodiak Island in the west to the Alexander Archipelago in the east, where Glacier Bay and the Inside Passage are found.The entire shoreline of the Gulf is...

     coast, many migrate to Pacific Northwest
    Pacific Northwest
    The Pacific Northwest is a region in northwestern North America, bounded by the Pacific Ocean to the west and, loosely, by the Rocky Mountains on the east. Definitions of the region vary and there is no commonly agreed upon boundary, even among Pacific Northwesterners. A common concept of the...

     in winter. A smaller version of kenaiensis.
  • Melospiza melodia rufina (Bonaparte, 1850), Sooty Song Sparrow. Outer islands of Alexander Archipelago
    Alexander Archipelago
    The Alexander Archipelago is a long archipelago, or group of islands, of North America off the southeastern coast of Alaska. It contains about 1,100 islands, which are the tops of the submerged coastal mountains that rise steeply from the Pacific Ocean. Deep channels and fjords separate the...

     and Haida Gwaii (Queen Charlotte Islands); most are resident. A very dark, rufous, and small form. Includes M. m. kwaisa Cumming, 1933.
  • Melospiza melodia morphna Oberholser, 1899. Coastal region of central British Columbia
    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...

     south to NW Oregon
    Oregon
    Oregon 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...

    ; resident. Lighter, more rufous than rufina. Previously M. m. cinerea (non Gmelin) (Audubon, 1839); M. m. phaea Fisher, 1902 are Central Oregon hybrids between this subspecies and M. m. cleonensis.
  • Melospiza melodia merrilli Brewster, 1896. Occurs between the ranges of morphna and montana south to N Nevada
    Nevada
    Nevada is a state in the western, mountain west, and southwestern regions of the United States. With an area of and a population of about 2.7 million, it is the 7th-largest and 35th-most populous state. Over two-thirds of Nevada's people live in the Las Vegas metropolitan area, which contains its...

    ; some migrate south in winter. Includes M. m. ingersolli McGregor, 1899 and M. m. inexspectata Riley, 1911 (Riley Song Sparrow; inexpectata is a common lapsus
    Lapsus
    A lapsus is an involuntary mistake made while writing or speaking. According to Freud's early psychoanalytic theory, a lapsus represents a missed deed that hides an unconscious desire....

    ). Doubtfully distinct; intermediate between morphna and montana in appearance also and may be hybrid birds.
  • Melospiza melodia cleonensis McGregor, 1899. SW Oregon west of Cascade Mountains south to NW California
    California
    California 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...

    . Brownish-buffish, notably on the flanks; no grey on back; underside with somewhat diffuse chestnut streaks.

Cismontane California group

Small, well-marked and short-winged brownish forms. All resident, except occasional birds from upland populations.
  • Melospiza melodia gouldii Baird, 1858. Coastal central California, except San Francisco Bay
    San Francisco Bay
    San Francisco Bay is a shallow, productive estuary through which water draining from approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean...

    . A very brown and clear-marked subspecies; buffish (not light grey) fringes of upper back. M. m. santaecrucis Grinnell, 1901 are hybrids with birds from southwards and Central Valley populations.
  • Melospiza melodia samuelis (Baird, 1858), San Pablo Song Sparrow. N San Francisco Bay and San Pablo Bay
    San Pablo Bay
    San Pablo Bay is a tidal estuary that forms the northern extension of San Francisco Bay in northern California in the United States. Most of the Bay is shallow; however, there is a deep water channel approximately in mid bay, which allows access to Sacramento, Stockton, Benicia, Martinez, and...

     saltmarshes. A small, tiny-billed subspecies with dirty olive upperpart background.
  • Melospiza melodia maxillaris Grinnell, 1909, Suisun Song Sparrow. Suisun Bay
    Suisun Bay
    Suisun Bay is a shallow tidal estuary at in northern California, USA. It lies at the confluence of the Sacramento and San Joaquin Rivers, forming the entrance to the Sacramento-San Joaquin River Delta, an inverted river delta...

     marshes. Dark upperparts; brown with grey mantle edges; plump bill base.
  • Melospiza melodia pusillula Ridgway, 1899, Alameda Song Sparrow. E San Francisco Bay saltmarshes. Yellowest subspecies, paler than samuelis and clear yellow hue below.
  • Melospiza melodia heermanni Baird, 1858. Central coastal California and Central Valley south to N Baja California
    Baja California
    Baja 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...

    . Similar in color to maxillaris but medium-sized mainland subspecies. Some N-S variation with birds becoming blacker on backs, local populations once separated as M. m. cooperi Ridgway, 1899 and M. m. mailliardi Grinnell, 1911. The latter, occurring around Modesto, may be distinct.
  • Melospiza melodia graminea Townsend, 1890. Described from Santa Barbara Island
    Santa Barbara Island
    Santa Barbara Island is a small island of the Channel Islands archipelago in California. It is located about off the Southern California coast from the Palos Verdes Peninsula, near Los Angeles in Ventura County, California....

    , California Channel Islands. A smaller, pale-grey version of heermanni. Originally called Santa Barbara Song Sparrow; birds from the Coronado Islands
    Coronado Islands
    The Coronado Islands are a group of four islands off the northwest coast of the Mexican state of Baja California. Battered by the wind and waves, they are largely infertile and uninhabited except for a small military detachment and a few lighthouse keepers...

     were described as M. m. coronatorum Grinnell and Daggett, 1903, those from San Miguel Island
    San Miguel Island
    San Miguel Island is the westernmost of California's Channel Islands, located across the Santa Barbara Channel in the Pacific Ocean, within Santa Barbara County, California. San Miguel is the sixth-largest of the eight Channel Islands at , including offshore islands and rocks. Prince Island, off...

     as M. m. micronyx Grinnell, 1928 and those from San Clemente
    San Clemente Island
    San Clemente Island is the southernmost of the Channel Islands of California. It is owned and operated by the United States Navy, and is a part of Los Angeles County. Defined by the United States Census Bureau as Block Group 2 of Census Tract 5991 of Los Angeles County, California, it is long and...

    , Santa Rosa
    Santa Rosa Island, California
    Santa Rosa Island is the second largest of the Channel Islands of California at 53,195 acres . Defined by the United States Census Bureau as Block 3009, Block Group 3, Census Tract 29.10 of Santa Barbara County, California, the 2000 census showed an official population of 2 persons. It is part of...

     and Anacapa Island
    Anacapa Island
    Anacapa Island is a small volcanic island located about off the coast of Port Hueneme, California, in Ventura County. The Island is composed of a series of narrow islets six miles long, running in a mostly east-west orientation, five miles east of Santa Cruz Island...

    s as M. m. clementae Townsend, 1890. Hybrid population with heermanni on Santa Cruz Island
    Santa Cruz Island
    Santa Cruz Island was the largest privately owned island off the continental United States, but is currently part-owned by the National Park service . The island, located off the coast of California, is long and from wide...

    . Extirpated on Santa Barbara (and possibly San Clemente) by feral cats, c.1967-1970.

Southwestern group

Small, pale, streaks rufous; all resident.
  • Melospiza melodia fallax (Baird, 1854), Desert Song Sparrow. Sonoran
    Sonoran Desert
    The Sonoran Desert is a North American desert which straddles part of the United States-Mexico border and covers large parts of the U.S. states of Arizona and California and the northwest Mexican states of Sonora, Baja California, and Baja California Sur. It is one of the largest and hottest...

     and parts of Mojave Desert
    Mojave Desert
    The Mojave Desert occupies a significant portion of southeastern California and smaller parts of central California, southern Nevada, southwestern Utah and northwestern Arizona, in the United States...

    s to E Arizona
    Arizona
    Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

    . A pale ruddy desert form. Synonyms are M. m. saltonis Grinnell, 1909, M. m. virginis Marshall and Behle, 1942 and M. m. bendirei Phillips, 1943.
  • Melospiza melodia rivularis Bryant, 1888. Central Baja California. Similar to fallax, lightly streaked breast and long slender bill.
  • Melospiza melodia goldmani Nelson, 1899. Not yet found outside El Salto area, Sierra Madre Oriental
    Sierra Madre Oriental
    The Sierra Madre Oriental is a mountain range in northeastern Mexico.-Setting:Spanning the Sierra Madre Oriental runs from Coahuila south through Nuevo León, southwest Tamaulipas, San Luis Potosí, Querétaro, and Hidalgo to northern Puebla, where it joins with the east-west running Eje Volcánico...

    . Dark reddish brown back with brownish streaks just as in morphna.

Mexican Plateau group

Black-spotted, white throats; all resident.
  • Melospiza melodia adusta Nelson, 1899. Río Lerma drainage from Zacapú
    Zacapú
    Zacapu is a city and its surrounding municipality in the Nahuatzen mountains of Michoacán, Mexico. the city had a population of 51,386 in the 2005 census and the municipality 70,636. The municipality has an area of 455.96 km² .- Georaphy :The municipality has an area of 455.96 km. It is...

     to Lago Yuriria
    Yuriria
    Yuririapundaro, Guanajuato, Mexico, also known as Yuriria, is one of 46 municipalities in the Mexican state of Guanajuato. Its location and historical importance are key factors to the outstanding and significal importance of the municipality....

    . Bold black pattern on belly and back, clear white throat. Birds become less ruddy brown going east.
  • Melospiza melodia villai Phillips and Dickerman, 1957. Headwaters of Río Lerma near Toluca
    Toluca
    Toluca, formally known as Toluca de Lerdo, is the state capital of Mexico State as well as the seat of the Municipality of Toluca. It is the center of a rapidly growing urban area, now the fifth largest in Mexico. It is located west-southwest of Mexico City and only about 40 minutes by car to the...

    . Darker and duller brown than adusta, distinctly large.
  • Melospiza melodia mexicana Ridgway, 1874. Hidalgo to Puebla
    Puebla
    Puebla officially Estado Libre y Soberano de Puebla is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico. It is divided in 217 municipalities and its capital city is Puebla....

    . Duller and paler than adusta, birds becoming greyish going south. Includes M. m. azteca Dickerman, 1963 and M. m. niceae Dickerman, 1963. "M. m. pectoralis" (ex von Müller, 1865) cannot be assigned to a known Song Sparrow population.

Conservation status

Seen as a whole, the Song Sparrow is widespread and common to be classified as Species of Least Concern by the IUCN. The taxa mailliardi, maxillaris, samuelis (all Category 3), pusillula (Category 2), and graminea (Category 1) are listed as Species of Special Concern in California
California
California 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...

.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK