The Andean ibis (''Theristicus branickii'') is a species of
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 lightweigh ...
in the family
Threskiornithidae
The family Threskiornithidae includes 36 species of large wading birds. The family has been traditionally classified into two subfamilies, the ibises and the spoonbills; however recent genetic studies have cast doubt on this arrangement, and hav ...
. 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 natur ...
and fields in western
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 southe ...
. This species was considered a subspecies of the
black-faced ibis
The black-faced ibis (''Theristicus melanopis'') is a species of bird in the family Threskiornithidae. It is found in grassland and fields in southern and western South America. It has been included as a subspecies of the similar buff-necked i ...
, and some taxonomic authorities (including the
American Ornithological Society
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 m ...
) still consider it so.
Description
It has a total length of approximately . The head, neck and lower chest are
buffish, the crown and nape are cinnamon, the upperparts and (often incomplete) chest-band are grey, the belly and
flight feather
Flight feathers (''Pennae volatus'') are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the wings or tail of a bird; those on the wings are called remiges (), singular remex (), while those on the tail ...
s are black, and the
wing-covert
A covert feather or tectrix on a bird is one of a set of feathers, called coverts (or ''tectrices''), which, as the name implies, cover other feathers. The coverts help to smooth airflow over the wings and tail. Ear coverts
The ear coverts are sm ...
s are whitish (though not contrasting strongly with the grey upperparts). The
bill
Bill(s) may refer to:
Common meanings
* Banknote, paper cash (especially in the United States)
* Bill (law), a proposed law put before a legislature
* Invoice, commercial document issued by a seller to a buyer
* Bill, a bird or animal's beak
Plac ...
, throat-wattle and bare skin around the eyes are blackish and the legs are red. The throat-wattle is smaller, the bill is shorter, the wing-coverts are greyer, the lower chest is paler and the cinnamon on the crown and nape is brighter and more extensive when compared to the black-faced ibis.
Distribution and status
The Andean ibis is restricted to altitudes of in the
Andean
The Andes, Andes Mountains or Andean Mountains (; ) are the List of mountain ranges#Mountain ranges by length, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range i ...
highlands of
Bolivia
, image_flag = Bandera de Bolivia (Estado).svg
, flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center
, flag_alt2 = 7 × 7 square p ...
, Peru and
Ecuador
Ecuador ( ; ; Quechua: ''Ikwayur''; Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechua: ''Ikwadur Ripuwlika''; Shuar: ''Eku ...
. It is generally uncommon, and formerly also occurred in
Lauca
Lauca is a Biosphere Reserve, located in northern Chile, in Arica y Parinacota Region. The reserve comprises three protected areas: Lauca National Park, Las Vicuñas National Reserve and Salar de Surire Natural Monument. This zone was declared a ...
in far northern Chile.
References
* Matheu, E., & J. del Hoyo (1992). Family Threskiornithidae (Ibises and Spoonbills). pp. 472–506 in: del Hoyo, J., A. Elliott, & J. Sargatal (editors). ''Handbook of the Birds of the World.'' Vol. 1. Ostrich to Ducks. Lynx Edicions, Barcelona.
Further reading
*
{{Taxonbar, from=Q2660392
Andean ibis
Birds of the Altiplano
Birds of Ecuador
Andean ibis
Andean ibis