Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1975
Fox Sparrow
Passerella iliaca
Oct. 15 Tilden Park, Contra Costa Co., Calif.: 15. At least 5 singing nearly full songs.
Nov. 5 Tilden Park: 10. At least 3 singing.