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Kilham L. The American Crow and the Common Raven

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Kilham L. The American Crow and the Common Raven
Texas A&M University Press, 1989. — 275 p. — ISBN 0-89096-466-1.
This book reports my observations of American Crows (Corvus brachyrhynchos) on a cattle ranch in Florida where the crows were unusually tame and on a farm in New Hampshire where they were wary, as they are in most places. My aim has been to make a study of all aspects of crow behavior. As often happens, it seems that our commonest birds are the ones most neglected by researchers. When I began this study in 1981, many of the behaviors I have observed, including cooperative breeding, territoriality, storing of food, copulations, play, foraging, interrelations with other animals, allopreening, and various "uncrowlike" vocalizations that I have recorded, had either not been described or had been described in only minimal detail by previous authors. As far as I am aware, the cooperative breeding of American Crows, hitherto almost entirely neglected by ornithologists, is more highly developed in them than in any other bird north of Mexico.
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