Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1974
Hammond's Flycatcher
Empidonax hammondii
May 23 Crane Flat meadows, Yosemite NP, Tuolumne Co, Calif : 1 h.o.
June 3 Crane Flat area : 15. The call note is wheezier
than the drier call of Dusky
wheezup - Hammond's
seee-lyp - Dusky
It also gives a "peep" call similar to note
given by Pygmy Nuthatch.