Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Remsen,
J.V.
1973
Yellow-shafted Flicker
Colaptes auratus auratus
Dec. 28 Barr Lake to Muir Springs, Colo: 1♂ + 1♀ at Muir Springs -
no visible traces of intergradation