Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1973
Costals Hummingbird
Calyptra costae
July 23 Mt. Pinos way, Frazier Park, Kern Co., Calif : 1 imm. ♂ in
combat with imm. ♀ Annals on chaparral slope with many
yuccas present.
Sep. 14 Yucca Valley, San Bernardino Co., Calif : 1 imm. or ♀ ident by
thin high-pitched call,