Aythya affinis

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Related to Aythya affinis: lesser scaup duck, scaup duck
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Noun1.Aythya affinis - common scaup of North AmericaAythya affinis - common scaup of North America; males have purplish heads
bluebill, scaup, scaup duck, broadbill - diving ducks of North America having a bluish-grey bill
References in periodicals archive ?
De las 24 especies registradas se tiene un total de ocho aves migratorias (Branta bernicla, Aythya americana, Aythya affinis, Pelecanus erythrorhynchos, Tringa semipalmata, Numenius americanus, Limosa fedoa y Larus delawarensis) que corresponden al 38% del total; y las 16 especies restantes (62%) se consideran residentes ya que estan presentes todo el ano.
lesser scaup Aythya affinis which adjust their breeding based on the photoperiod rather than temperature or habitat availability, and should hence be more likely affected by climate change in the long-term (DeVink et al.
erythrorhynchus 1 Anas clypeata 1 Aythya affinis 3 Bucephala albeola fossilis 3 Oxyura jamaicensis 16 Anatid 4 Calipepla californica 3 Rallus limicola 2 Fulica americana 11 Phalaropus lobatus 1 Geococcyx californianus 2 Apheloocoma califbrnica 1 Vireo sp.