Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1978
Greater Scaup
Aythya marila
Apr.25 San Diego area, San Diego Co., Calif.: 3♂ + 1♀ on San Diego bay just N. of e. end of Coronado Bridge, where they were discovered weeks ago. large bill nail, rounded heads.
Apr.29 San Diego area: 4 (same birds)