Anas strepera (L.)
(Anas strepera couesi (Streets))
|syn. Chaulelasmus couesi (Streets)|
Kiribati: Teraina / Line Islands
|local name: -|
|size: 46 - 55 cm
extinction date: sometimes after 1874
|The actual Gadwall (Anas
strepera (L.)) is a quite scarce winter visitor to the Hawaiian
Islands, and to the Line Islands, where in the course of time obviously
even a distinct population - named Coues' Gadwall - has evolved, at least on the island of Teraina.
This duck form is known from just two specimens, a male and a female, which both were shot in the year 1874 on the former lagoon of Teraina, which now is a freshwater lake.
Coues' Gadwall probably also occurred on other islands of the archipelago, but unfortunately there is no evidence therefor.
Coues' Gadwall (Anas strepera couesi); bird on the right
Depiction from: 'John C. Phillips: A Natural History of the Ducks. Boston; Houghton Mifflin Company; 1922-1926'
- Dieter Luther: Die ausgestorbenen Vögel der Welt. Westarp Wissenschaften 1986
- Steve Madge; Hilary Burn: Waterfowl: An identification guide to the Ducks, Geese and Swans of the World. Houghton Mifflin, Boston. 1988