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The yellow-legged thrush (''Turdus flavipes'') is a
songbird A songbird is a bird belonging to the suborder Passeri of the perching birds (Passeriformes). Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin ''oscen'', "songbird". The Passeriformes contains 5000 ...
of northern and eastern
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...
and the Caribbean.


Taxonomy

In recent times, it is increasingly often placed in the
genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
''
Turdus True thrushes are medium-sized mostly insectivorous or omnivorous birds in the genus ''Turdus'' of the wider thrush family, Turdidae. The genus name ''Turdus'' is Latin for "thrush". The term "thrush" is used for many other birds of the family T ...
'' again, however some taxonomists place this species in the genus ''
Platycichla ''Platycichla'' is a small disputed genus of tropical South American thrushes. It contains just two species: * Pale-eyed thrush, ''Platycichla (Turdus) leucops'' * Yellow-legged thrush, ''Platycichla (Turdus) flavipes'' These are medium-size ...
'' based on morphology. The
South American Classification Committee The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its ...
of the American Ornithologists' Union places it in the genus ''Turdus'', as does the
International Ornithological Committee The International Ornithologists' Union, formerly known as the International Ornithological Committee, is a group of about 200 international ornithologists, and is responsible for the International Ornithological Congress and other international ...
.


Description

This thrush is long and weighs . Both sexes have yellow legs and eye-ring. The male has a yellow bill and its plumage is usually black with a slate-grey back and lower underparts. However, the hue of the grey areas varies, and the male of one of the five subspecies, ''P. f. xanthoscelus'' of
Tobago Tobago () is an List of islands of Trinidad and Tobago, island and Regions and municipalities of Trinidad and Tobago, ward within the Trinidad and Tobago, Republic of Trinidad and Tobago. It is located northeast of the larger island of Trini ...
, is all-black, resembling the male
Eurasian blackbird The common blackbird (''Turdus merula'') is a species of true thrush. It is also called the Eurasian blackbird (especially in North America, to distinguish it from the unrelated New World blackbirds), or simply the blackbird where this does n ...
(''Turdus merula''). Females have a dull bill, warm brown upperparts and paler underparts. The juvenile male is brownish with black wings and tail, while the juvenile female resemble the adult female, but is duller, flecked with orange above and spotted and barred with dark brown below.ffrench ''et al.'' (1991), Clement & Hathaway (2000), Hilty (2003) The song of the male is musical phrases, '', sreee, sree, sreee'', again somewhat resembling that of the Eurasian blackbird, but sometimes including some imitation of other birds songs. The typical call is a sharp ''srip'' and a peculiar ''seeet'' given in alarm.


Distribution and habitat

It has a highly disjunct distribution. One population breeds in northern Colombia,
Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...
, far northern
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
,
Trinidad Trinidad is the larger and more populous of the two major islands of Trinidad and Tobago. The island lies off the northeastern coast of Venezuela and sits on the continental shelf of South America. It is often referred to as the southernmos ...
,
Tobago Tobago () is an List of islands of Trinidad and Tobago, island and Regions and municipalities of Trinidad and Tobago, ward within the Trinidad and Tobago, Republic of Trinidad and Tobago. It is located northeast of the larger island of Trini ...
, and
Margarita A margarita is a cocktail consisting of Tequila, triple sec, and lime juice often served with salt on the rim of the glass. The drink is served shaken with ice (on the rocks), blended with ice (frozen margarita), or without ice (straight up). ...
, as well as parts of the
Pakaraima Mountains The Pacaraima or Pakaraima Mountains ( pt, Serra de Pacaraima, es, Sierra de Pacaraima) are a mountain range primarily in southwestern Guyana, and into northern Brazil and eastern Venezuela. Geography The range extends from west to east for over ...
in western Guyana (including as it seems Mount Roraima). A second population occurs in eastern
Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...
, eastern
Paraguay Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to th ...
, and far northeastern
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th ...
. The Argentine
subpopulation In statistics, a population is a Set (mathematics), set of similar items or events which is of interest for some question or experiment. A statistical population can be a group of existing objects (e.g. the set of all stars within the Milky Way g ...
is partially migratory, being resident in the northern part, while southernmost breeders spend the Austral winter further north. Some populations in northern
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the sout ...
also take part in local movements, but these are not well understood. The habitat of this small thrush is rainforest,
secondary woodland A secondary forest (or second-growth forest) is a forest or woodland area which has re-grown after a timber harvest or clearing for agriculture, until a long enough period has passed so that the effects of the disturbance are no longer evident. ...
, and overgrown
plantations A plantation is an agricultural estate, generally centered on a plantation house, meant for farming that specializes in cash crops, usually mainly planted with a single crop, with perhaps ancillary areas for vegetables for eating and so on. Th ...
. It is mainly a
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
highlands Highland is a broad term for areas of higher elevation, such as a mountain range or mountainous plateau. Highland, Highlands, or The Highlands, may also refer to: Places Albania * Dukagjin Highlands Armenia * Armenian Highlands Australia *Sou ...
up to
ASL American Sign Language (ASL) is a natural language that serves as the predominant sign language of Deaf communities in the United States of America and most of Anglophone Canada. ASL is a complete and organized visual language that is express ...
, but locally it occurs down to near
sea level Mean sea level (MSL, often shortened to sea level) is an average surface level of one or more among Earth's coastal bodies of water from which heights such as elevation may be measured. The global MSL is a type of vertical datuma standardise ...
.


Ecology

The yellow-legged thrush mainly feeds in trees and bushes, infrequently on the ground, and mostly eats
fruit In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in particu ...
s and
berries A berry is a small, pulpy, and often edible fruit. Typically, berries are juicy, rounded, brightly colored, sweet, sour or tart, and do not have a stone or pit, although many pips or seeds may be present. Common examples are strawberries, rasp ...
, e.g.,
Melastomataceae Melastomataceae is a family of dicotyledonous flowering plants found mostly in the tropics (two-thirds of the genera are from the New World tropics) comprising c. 175 genera and c. 5115 known species. Melastomes are annual or perennial herbs, s ...
. It rarely if ever attends
mixed-species feeding flock A mixed-species feeding flock, also termed a mixed-species foraging flock, mixed hunting party or informally bird wave, is a flock of usually insectivorous birds of different species that join each other and move together while foraging. These are ...
s, as its habit of keeping to the tree-tops makes it rarely worthwhile to join such conspicuous groups. The nest is a lined shallow cup of twigs on a bank or amongst rocks. Two or three reddish-blotched green or blue eggs are laid. It is fairly common in most of its range, and therefore listed as
Least Concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...
by the IUCN. However, the yellow-legged thrush is a shy species, and the female in particular is difficult to see, since she does not sing and has a cryptic coloration.Clement & Hathaway (2000), BLI (2008)


Footnotes


References

* Clement, Peter & Hathaway, Ren (2000): ''Thrushes''.
Christopher Helm Christopher Alexander Roger Helm (born Dundee, 1 February 1937 – 20 January 2007) was a Scottish book publisher, notably of ornithology related titles, including the '' Helm Identification Guides''. Born in Dundee, he was raised in Forfar ...
, London. * ffrench, Richard; O'Neill, John Patton & Eckelberry, Don R. (1991): ''A guide to the birds of Trinidad and Tobago'' (2nd edition). Comstock Publishing, Ithaca, N.Y.. * Hilty, Steven L. (2003): ''Birds of Venezuela''.
Christopher Helm Christopher Alexander Roger Helm (born Dundee, 1 February 1937 – 20 January 2007) was a Scottish book publisher, notably of ornithology related titles, including the '' Helm Identification Guides''. Born in Dundee, he was raised in Forfar ...
, London. * Machado, C.G. (1999): A composição dos bandos mistos de aves na Mata Atlântica da Serra de Paranapiacaba, no sudeste brasileiro ixed flocks of birds in Atlantic Rain Forest in Serra de Paranapiacaba, southeastern Brazil ''Revista Brasileira de Biologia'' 59(1): 75-85 ortuguese with English abstract PDF fulltext
* O'Shea, B.J.; Milensky, Christopher M.; Claramunt, Santiago; Schmidt, Brian K.; Gebhard, Christina A.; Schmitt, C. Gregory & Erskine, Kristine T. (2007): New records for Guyana, with description of the voice of Roraiman Nightjar ''Caprimulgus whitelyi''. '' Bull. B.O.C.'' 127(2): 118–128
PDF fulltext
* Strewe, Ralf & Navarro, Cristobal (2004): New and noteworthy records of birds from the Sierra Nevada de Santa Marta region, north-eastern Colombia. '' Bull. B.O.C.'' 124(1): 38–51
PDF fulltext
{{Taxonbar, from=Q541001 yellow-legged thrush Birds of Colombia Birds of Venezuela Birds of Trinidad and Tobago Birds of the Caribbean Birds of the Atlantic Forest yellow-legged thrush yellow-legged thrush