The white-bridled finch (''Melanodera melanodera''), also known as the canary-winged finch or black-throated finch, is a small

passerine A passerine () is any bird of the order Passeriformes (; from Latin 'sparrow' and '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines are distinguished from other orders of birds by th ...

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweig ...

belonging to 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 ...

'' Melanodera'' together with the yellow-bridled finch (''M. xanthogramma''). Formerly placed in the family

Emberizidae The buntings are a group of Old World passerine birds forming the genus ''Emberiza'', the only genus in the family Emberizidae. The family contains 45 species. They are seed-eating birds with stubby, conical bills. Taxonomy The family Emberizid ...

, it is now considered a

tanager The tanagers (singular ) comprise the bird family Thraupidae, in the order Passeriformes. The family has a Neotropical distribution and is the second-largest family of birds. It represents about 4% of all avian species and 12% of the Neotropica ...

. It is found in

grassland A grassland is an area where the vegetation is dominated by grasses ( Poaceae). However, sedge ( Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur na ...

in southernmost

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 ...

. There are two subspecies: ''M. m. melanodera'' in the

Falkland Islands The Falkland Islands (; es, Islas Malvinas, link=no ) is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and about from Cape Dubouze ...

and ''M. m. princetoniana'' in southern

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 ...

and

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

Description

The male is grey-green above and yellow below with a grey head and upper breast. It has a black throat and mask which are bordered with white. There are large yellow patches in the wings and tail. Females are brown with dark streaks. They have yellow outer tail feathers and yellow fringes to the wing feathers. It is long. Birds on the mainland are smaller than those on the Falklands with a smaller bill and more yellow in the wings and tail. The call is a short, high-pitched note and the

song A song is a musical composition intended to be performed by the human voice. This is often done at distinct and fixed pitches (melodies) using patterns of sound and silence. Songs contain various forms, such as those including the repetit ...

is a repeated series of two or three whistles. It sings from a low perch such as a rock or grass tussock.

Distribution and habitat

It is common throughout the Falklands where it occurs up to about above sea level but is most often found in coastal areas. On the South American mainland, it is thinly distributed up to above sea level in

Magallanes Region The Magallanes Region (), officially the Magallanes y la Antártica Chilena Region ( es, Región de Magallanes y de la Antártica Chilena), is one of Chile's 16 first order administrative divisions. It is the southernmost, largest, and second lea ...

in Chile and Santa Cruz Province in Argentina. Its range extends southwards from about 47°S to northern

Tierra del Fuego Tierra del Fuego (, ; Spanish for "Land of the Fire", rarely also Fireland in English) is an archipelago off the southernmost tip of the South American mainland, across the Strait of Magellan. The archipelago consists of the main island, Isla ...

. It is typically found in flat areas of grassland, heathland, farmland, or dunes. The population on the Falklands is about 7,000-14,000 pairs and the species is not considered to be threatened. However, it is thought to be declining on the mainland because of

overgrazing Overgrazing occurs when plants are exposed to intensive grazing for extended periods of time, or without sufficient recovery periods. It can be caused by either livestock in poorly managed agricultural applications, game reserves, or nature res ...

Behaviour

It forages on the ground, feeding mainly on

seed A seed is an embryonic plant enclosed in a protective outer covering, along with a food reserve. The formation of the seed is a part of the process of reproduction in seed plants, the spermatophytes, including the gymnosperm and angiospe ...

s, especially those of

grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns a ...

es. The

nest A nest is a structure built for certain animals to hold eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic materi ...

is built of grass and lined with hair or feathers. It is placed low down in grass or between stones. Three or four

egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the a ...

s are laid and are usually blue-grey or grey-green with purple-brown markings towards the larger end.

References

* BirdLife International (2006)
Species factsheet: Melanodera melanodera
'. Downloaded from http://www.birdlife.org on 26/2/2007 * Alvaro Jaramillo, Peter Burke & David Beadle (2003) ''Field Guide to the Birds of Chile'', Christopher Helm, London * Robin W. Woods (1988) ''Guide to Birds of the Falkland Islands'', Anthony Nelson, Oswestry {{Taxonbar, from=Q2668293 white-bridled finch Birds of Patagonia white-bridled finch