Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1974
Ferruginous Hawk
Buteo regalis
Jan.26 Lapis Rd., Monterey Co, Calif: 1 imm. in open grassland.
Feb.10 Hwy. 33, Kings Co, Calif: 2i. One with completely white tail, the other fairly brownish
Feb.17 Calif. Valley- Carrizo Plain, San Luis Obispo Co, Calif: 1 gd.
Dec.17 Butte Sink, Sutter Co., Calif: 1
Dec.28 Barr Lake to Muir Spgs, Colo: 1 dark phase at Muir Spgs-
all dark except underwings ( but dark wing linings) and whitish tail
(above and below)