Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Weston
1946
Bubo virginianus
July 8 - Cottonwood Spring, 3000', Joshua Tree Natl.
Monument, Riverside Co., California. 10 a.m.
Wade Fox saw one fly from one side
of the canyon to a rock on the other
side 1/4 mi down canyon from the spring.
I have not heard any calling at night
in this area.