Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Cogswell
1948
Larus philadelphia
Nov. 7 Dunbarton Bridge (E. approach), Alameda Co., Calif?
almost the only species of gull present.
Several score, if not hundred, noted as we drove. The change in population being contrasted sharply with September.