The Birds of Colorado: Third Supplement
Cooke, Wells W. (Wells Woodbridge), 1858-1916
Article
1909
The Auk
26
400--422
BioStor
English
Washington, D.C, American Ornithologists' Union, etc, 1884-
BioStor: https://biostor.org/reference/124344 DOI: https://doi.org/10.2307/4071272