Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1977
Western Flycatcher
Empidonax difficilis
Dec.28 Mill Creek Campground, San Bernardino Mtns, San Bernardino Co., Calif.: 1 (incl. throat)
in dense alder riparian. Underparts yellow to greenish-yellow; back green; pale eye-ring and wing-bars.