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The Subspecies of the Mountain Chickadee
Fieldwork was carried on by the California Museum of Vertebrate Zoology during 1917 in the Inyo region of eastern California. In going over the collection of birds obtained, the attention of the writer was arrested by certain peculiarities evident in the Mountain Chickadees. Comparison with series from the Sierras showed the Inyo birds to be […]
Author: Grinnell;Joseph Language: English Genre: Ornithology99 kB ↓Download, ↑Link ↑Convert ♥Buy It