Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1974
Western Bluebird
Sialia mexicana
Jan.21 San Pablo Ridge, Contra Costa Co, Calif : 1
Feb.18 San Luis NWR, Merced Co, Calif : 3
May 5 Mines Rd + Del Puerto Cyn. : 41 - increased over same route last year - only 15 on 5-6-73. One was carrying nest material.