Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1977
Common Tern
Sterna hirundo
July 31 Bay Bridge Toll Plaza, Alameda Co. Calif.: 30 (10 ad, 20 im)
Aug.6 Bay Bridge Toll Plaza: 10
Aug.14 Bay Bridge Toll Plaza: 65 (~75% imm.)
Aug.28 Bay Bridge Toll Plaza: 35
Sept.4 Bay Bridge Toll Plaza: 30 (25 im.)
Sept.15 North End Salton Sea, Riverside Co. Calif.: 200 - very high number
but probably normal at Salton Sea.