Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1973
Swainson's Hawk
Buteo swainsoni
July 14 Interstate 5, 7 mi. e. of Woodland, Yolo Co., Calif.: 2 light ads.
July 22 Interstate 5, near Crows Landing, Stanislaus Co., Calif.: 3 together
on fence 4 miles s. of Crows Landing exit, and one dark phase
at Crows Landing exit