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Anas formosa

Anas formosa (*)

Cladus: Eukaryota
Supergroup: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Aves
Subclassis: Carinatae
Infraclassis: Neornithes
Parvclassis: Neognathae
Ordo: Anseriformes
Familia: Anatidae
Subfamilia: Anatinae
Genus: Anas
Species: Anas formosa


Anas formosa Georgi, 1775


* Bemerkungen einer Reise in Russischen Reich im Jahre 1772. p.168
* Anas formosa Report on ITIS
* IUCN link: Anas formosa (Vulnerable)

Vernacular names
Česky: Čírka sibiřská
Deutsch: Baikalente
English: Baikal Teal
Esperanto: Bajkala kreko
Español: Cerceta del Baikal
Français: Sarcelle élégante
Magyar: Cifra réce
Italiano: Alzavola asiatica
日本語: トモエガモ
한국어: 가창오리
Lietuvių: Baikalinė kryklė
Nederlands: Siberische taling
‪Norsk (bokmål)‬: Gulkinnand
Polski: Cyraneczka bajkalska
Русский: Клоктун
Svenska: Gulkindad kricka

The Baikal Teal (Anas formosa), also called the Bimaculate Duck or Squawk Duck, is a dabbling duck that breeds within the forest zone of eastern Siberia from the Yenisey basin eastwards to Kamchatka, northern Koryak, eastern Magadan Oblast, northern Khabarovsk Krai, southeastern and northern Sakha east central Irkutsk Oblast, and northern Krasnoyarsk Krai. It is a migratory species, wintering in South Korea, Japan, Taiwan, northern and eastern China, from Beijing down the coast to the Vietnam border, and west to Yunnan then north to Chongqing and Henan.[1][2] Molecular[3] and behavioral[4] data suggest that it has no close relatives among living ducks and should be placed in a distinct genus; it is possibly closest to such species as the Garganey and the Northern Shoveler.

At between 39 and 43 centimetres (15 and 17 in), this duck is slightly larger and longer-tailed than the Common Teal. The breeding male is unmistakable, with a striking green nape, yellow and black auriculars, neck, throat. It has a dark crown, and its breast is light brown with dark spots. It has long dropping dark scapulars, and its grey sides are set off on the front and rear with white bars.

The female looks similar to a female Green-winged Teal but with a longer tail, and a distinctive white spot at the base of the bill and a white throat that angles to the back of the eye. She also has a distinct light eyebrow bordered by a darker crown. The underwing is similar to the Green-winged Teal also, but has a darker leading edge. The green speculum has an indistinct cinnamon-buff inner border.[5] Some "females" have "bridle" markings on their faces, but it has been suggested that at least some of these bridled "females," if not all, are in fact juvenile males.[5] The juvenile has a plumage similar to that of the female and can be distinguished from the Common Teal by the pale loral spot.

In non-breeding (eclipse) plumage, the drake looks more like the female, but plumage is a much richer reddish-brown (rufous) colour.

It breeds in pools on the tundra edge and within swampy forests. In winter it is found on lowland fresh waters.

This species is classified as Vulnerable due to hunting and destruction of its wintering wetland habitats.[1] However, recent books state that the species is making a good comeback.[5]

There are approximately 300,000 Baikal teal in the world.[6]


The Baikal teal has a height from 11.75 to 15.75 inches and a length of 17 inches. It weighs an average of 1 pound.

The Baikal teal is a remarkably small duck. Drakes and other Baikal teal vary significantly in coloring. While the male is noticeably green, black, yellow and white, females are characterized by a white spot on the cheek. With the drake, the colors are clearly distinguishable from each other.


1. ^ a b c IUCN (2009)
2. ^ Clements, James (2007). "The Clements Checklist of the Birds of the World". Cornell University Press. http://www.cornellpress.cornell.edu/cup_detail.taf?ti_id=4566.
3. ^ Johnson, Kevin P.; Sorenson, Michael D. (1999) (PDF). Phylogeny and biogeography of dabbling ducks (genus Anas): a comparison of molecular and morphological evidence.. Auk. pp. 792–805. http://elibrary.unm.edu/sora/Auk/v116n03/p0792-p0805.pdf.
4. ^ Johnson, Kevin P. McKinney, Frank; Wilson, Robert & Sorenson, Michael D. (2000): The evolution of postcopulatory displays in dabbling ducks (Anatini): a phylogenetic perspective. Animal Behaviour 59(5): 953–963 PDF fulltext
5. ^ a b c Dunn, John L. and Alderfer, Jonathan, (2006) National Geographic Field Guide to the Birds of North America, Fifth Edition ISBN 0-7922-5314-0
6. ^ Planet Earth episode 1: "From Pole to Pole". [Documentary]. BBC. 03/05/2006.

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Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License