North-east 1 Winter VU I i Gilbert et al. (2011) pp. Aythya ferina Europe/North-west 109 Europe Central & NE 1 Winter VU I i Aythya ferina Sea & Mediterranean Western 1 Winter VU I i Aythya ferina Siberia/South-west Asia Madagascar All CR S S Aythya innotata West 1 Breeding NT D d Aythya nyroca & West Africa Eastern Europe/E 1 Breeding NT D d Aythya nyroca Mediterranean & Sahelian Africa Western Asia/SW 1 Breeding NT D i Aythya nyroca Asia & NE Africa Europe 1 Winter I i Aythya fuligula (win) Central Europe, 1 Winter I i Aythya fuligula Sea & Mediterranean (win)
Aythya ferina North-east Europe/North-west Europe 1 Winter VU I i Gilbert et al. (2011) pp. 109 Aythya ferina Central & NE Sea & Mediterranean 1 Winter VU I i Aythya ferina Western Siberia/South-west Asia 1 Winter VU I i Aythya innotata Madagascar All CR S S Aythya nyroca West & West Africa 1 Breeding NT D d Aythya nyroca Eastern Europe/E Mediterranean & Sahelian Africa 1 Breeding NT D d Aythya nyroca Western Asia/SW Asia & NE Africa 1 Breeding NT D i Aythya fuligula Europe (win) 1 Winter I i Aythya fuligula Central Europe, Sea & Mediterranean (win) 1 Winter I i