Apartados - Ornitología Americana : 1) The distribution of bird life in the Urubamba Valley Perú. 2) The habitat groups of North American Birds in the Museum of Natural History. 3) The Nesting Habits of Wagler`s Cropendola (Zarhyngus Wagleri) on Barro Colorado Island. 4) The department of birds American Museum its History and Aims.5) The variations and distributions of saltador Aurantiirostris. 6) Mutation in Capito Auratus. 7) Descriptions of New Birds from Mt. Duida Venezuela. 8) The homes of a Hummer. 9) Relationships of the Races of Phaeoprogne, Tapera and Their probable significanee.
Material type: TextPublication details: Washington 1921No physical items for this record
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