Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Weston
1946
West Flyg Kingd
Empidonax difficilis
1.
July 1 - Quail Spring, Joshua Tree Natl Mon. San Bernardino Co. Calif.
4:30 a.m. a pair seen fluttering about top of
15+ ft Joshua tree. Investigation showed a
nest placed on top of a clump of leaves (spines). I was
unable to climb up and see what was in
it. However because because of the frequency
of the visits I rather suspect there were young.
As each parent would approach the nest, the
other would flutter up in a type of a song
flight. 8:30 a.m. one seen at the spring apparently
there to drink. The presence of three people
kept it from flying down and drinking.