The definitive study of North American birds (United States, Canada, Mexico), prepared under auspices of Smithsonian Institution. Contains practically everythin

This is the fourteenth in a series of bulletins of the United States National Museum on the life histories of North American birds, with previous numbers issued

Excerpt from Life Histories of North American Flycatchers, Larks, Swallows, and Their Allies: Order Passeriformes The plumages are described in only enough deta