Mareca penelope

Occasionally hybridizes with A. americana (AOU 1983). Formerly (AOU 1983, 1998) considered part of Anas, but now treated as separate on the basis of genetic data (Gonzalez et al. 2009) which indicate that Anas as previously constituted was paraphyletic, and further that it consisted of four deeply divergent clades, now recognized as the separate genera Sibirionetta, Spatula, Mareca, and Anas (cf. Livezey 1991). Linear sequence of genera and species follows Gonzalez et al. (2009). (AOU 2017).

BREEDING: in Eurasia from Iceland, British Isles, and Scandinavia east to eastern Siberia and Kamchatka, south to northern Europe, central Russia, and Transcaucasia. NON-BREEDING: in Old World from Iceland, British Isles, northern Europe, southern Russia, and Japan south to the eastern Atlantic islands, Africa, Arabia, India, Malay Peninsula, southern China, Formosa, and the Philippines. In North America on the Pacific coast from southeastern Alaska to northern Baja California and on the Atlantic-Gulf coast from Labrador and Newfoundland south to Florida and west to southern Texas. Casual in Ceylon, Borneo, Celebes, Greenland, and Hawaii (AOU 1983).