aythya affinis

2 definitions found

aythya affinis - Collaborative International Dictionary of English v.0.48 :

  Scaup \Scaup\ (sk[add]p), n. [See Scalp a bed of oysters or
     mussels.]
     1. A bed or stratum of shellfish; scalp. [Scot.]
        [1913 Webster]
  
     2. (Zool.) A scaup duck. See below.
        [1913 Webster]
  
     Scaup duck (Zool.), any one of several species of northern
        ducks of the genus Aythya, or Fuligula. The adult
        males are, in large part, black. The three North American
        species are: the greater scaup duck (Aythya marila, var.
        nearctica), called also broadbill, bluebill,
        blackhead, flock duck, flocking fowl, and raft  duck
        ; the lesser scaup duck (Aythya affinis), called
        also little bluebill, river broadbill, and shuffler;
        the tufted, or ring-necked, scaup duck (Aythya  collaris
        ), called also black jack, ringneck,
        ringbill, ringbill shuffler, etc. See Illust. of
        Ring-necked duck, under Ring-necked. The common
        European scaup, or mussel, duck (Aythya marila), closely
        resembles the American variety.
        [1913 Webster]

aythya affinis - WordNet (r) 2.1 (2005) :

  Aythya affinis
      n 1: common scaup of North America; males have purplish heads
           [syn: lesser scaup, lesser scaup duck, lake duck,
           Aythya affinis]