Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Marshall, 1942
Empidonax fulvifrons
Los Eserriles, w. slope, Dept Chaltenuap
April 1 3 taken but 1 lost, 2231 ♂ + 2232 ♂ skel (very worn plumage) in grass & low bushes under pines - note not w other Emp. at sharp "pit". Flutters very close to grd - this warblers or sparrows at 10t.
April 6 2260 ♂ taken + several more heard & seen this time calling & foraging high in pines.