Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1974
Ring-necked Duck
Aythya collaris
Feb. 9 Marsh and Kellogg Creeks, Contra Costa Co., Calif.: 20
on a lake not shown on maps on Marsh Creek Rd.
Feb. 15 Briones Reg. Park, Contra Costa Co., Calif.: 10 on
Sindicich Lake
Apr. 25 Pena Adobe Lagoon, Vacaville, Solano Co., Calif.: 4
Apr. 26 Pena Adobe Lagoon: 4
Boca Dam, Nevada Co., Calif.: 10
May 24 Oasis Ranch, Mono Co., Calif.: 3♀♀ - very late or summery