White-necked sibi

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White-necked sibi
White-necked sibi

White-necked sibi

Systematics
Class : Birds (aves)
Order : Pelecaniformes
Family : Ibises and spoonbills (Threskiornithidae)
Genre : Theristicus
Type : White-necked sibi
Scientific name
Theristicus caudatus
( Boddaert , 1783)

The buff-necked ibis ( Theristicus caudatus ) is a species of bird in the family of ibises and spoonbills and lives in South America .

Appearance

The head and neck of the 71 to 76 cm tall white-necked ibis are brownish, the crown darker, the neck lighter. The wings are gray with a whitish field on the leading edge. The downward curved bill is dark gray, the legs are red. Behind the beak and around the eye there is a black field of vision. The white-necked ibis resembles the black- necked ibis in terms of plumage , but the neck is lighter and the white wing field is striking. There is no pronounced gender dimorphism ; the young birds have a narrow striped brown neck. The subspecies hyperorius has a paler neck and less white on the wing.

distribution and habitat

The white-necked ibis occurs on the north coast of South America from Colombia and Venezuela to Guiana . To the south, the distribution area extends over all of Brazil to Mato Grosso and northern Argentina and Uruguay . The birds of this species prefer open landscapes, including river and lake banks and wetlands. But they can also often be observed at a greater distance from water, for example on burned fields. The IUCN classifies the species as not endangered , the global population is estimated between 25,000 and 100,000.

food

The white-necked ibis feeds on worms , clams , crustaceans , large insects , snails , amphibians and small mammals .

Reproduction

The white-necked ibis breed in trees or on rocks, mostly in loose colonies. The clutch consists of two to four eggs.

Subspecies

  • Th. C. caudatus ( Boddaert , 1783)
  • Th. C. hyperorius ( Todd , 1948)

literature

  • J. del Hoyo, A. Elliott, J. Sargatal (Eds.) (1992): Handbook of the Birds of the World . Vol. 1. Ostrich to Ducks. Lynx Edicions, Barcelona, ISBN 84-87334-10-5

Web links

Commons : White-necked ibis ( Theristicus caudatus )  - Collection of images, videos and audio files