دانلود کتاب A field ornithology of the birds of eastern North America

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West Newton, Mass.: C. J. Maynard & Co, 1916. - 551 p.
This book, begun six years ago, has greatly exceeded in number of pages the original intentions of the author, but this will not, he trust, prove disadvantageous to the reader.
As the title indicates, all the birds, excepting perhaps a few very recently described forms, which occur between the North Pole and the Gulf of Mexico, east of the Mississippi River, are given. As the natural geographical western avifaunal boundaries are the Great Plains, most of the species which occur east of them are herein included.
In its scope as an exponent of field characters it may be regarded as a companion to my Directory to the Birds of Eastern North America.