Found 1 items, similar to Aythya collaris.
English → English (gcide) Definition: Aythya collaris Ring-necked \Ring"-necked`\, a. (Zo["o]l.) Having a well defined ring of color around the neck. [1913 Webster] Ring-necked duck (Zool.), an American scaup duck (Aythya collaris ). The head, neck, and breast of the adult male are black, and a narrow, but conspicuous, red ring encircles the neck. This ring is absent in the female. Called also ring-neck, ring-necked blackhead, ringbill, tufted duck, and black jack. [1913 Webster]