Baikal Teal vs Black-headed Duck

Baikal Teal

Sibirionetta formosa

Large434 gWetland

The Baikal teal has a height of 30–40 cm (11.75–15.75 in), and a weighs an average of 500 g (1 lb). At a length between 39–43 cm (15–17 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, and throat. It has a dark crown, and its breast is light brown with dark spots. Its grey sides are set off on the front and rear with white bars.

ID text from Wikipedia, CC BY-SA 4.0

Photo: Sun Jiao (Interaccoonale) · CC BY 4.0

Black-headed Duck

Heteronetta atricapilla

Large538 gWetland

The black-headed duck is the most basal living member of its subfamily, and it lacks the stiff tail and swollen bill of its relatives. Overall much resembling a fairly typical diving duck, its plumage and other peculiarities indicate it may not be a very close relative of the other stiff-tailed ducks, but rather the product of convergent evolution from the ancestors of the stiff-tailed ducks. The black-headed duck is about 35 cm (14 in) long. Males weigh an average of about 510 g (18 oz) and females 565 g (20 oz). Voice: The black-headed duck is usually silent. It does give a low "quah quah" as part of a courtship display, and also "a two note grunt followed by a whistle: – gr-rump-freet." Females make "clucking notes."

ID text from Wikipedia, CC BY-SA 4.0

Photo: Hugo Hulsberg · CC0

Photos and recordings are credited to their authors under the licence shown. Full profiles: Baikal Teal and Black-headed Duck.