Lawrence Kilham was a Fellow of the American Ornithologists' Union, professor of microbiology emeritus of Dartmouth Medical School, and a distinguished virologist. He passed away in 2000. "This definitive study is a gem for both American birders and serious ornithologists." --The Indianapolis News " . . . remarkable behaviors are reviewed and discussed with a rich assortment of anecdotes from the author's 8,000 hours of field observations. . . . This book explains especially the social systems of these birds, from cooperative breeding to predator mobbing. Difficult topics such as 'play' and 'thinking' in crows are interestingly and critically presented. . . . an appealing volume." --Choice " . . . his book is one of the best, most informative and engaging ones yet written about how some of these birds live, think, and feel. Kilham on crows compares favorably with Tinbergen on gulls, Goodall on chimpanzees, and Lorenz on dogs and jackdaws." --Smithsonian "The book has style and is outstanding in many ways. . . . His method is remarkable: He refuses to intervene and does not even mark individual birds. His intensive observation of birds used to the observer, however, allow him to follow the behavior and fate of particular individuals carefully. --Journal für Ornithologie "His interpretations and descriptions are also remarkable. --Journal für Ornithologie . . . Study of the text promises to be profitable because the author is well-read and displays an outstanding style. Enjoyment of his book is enhanced by its makeup with generous layout and black-and-white pictures. . . . The book could be an incentive for European scientists to re-examine the social systems of crows and other corvids, keeping in mind different conditions of habitat and interpreting results in the light of evolutionary-biological hypotheses. Kilham himself takes an initial step in this regard in a special summarizing chapter." --Journal für Ornithologie "Kilham's independent and somewhat unorthodox approach to research has particular value to amateur birders . . . The many citations in the text and an extensive list of references suggest Kilham has much confidence in his opinions and the 'chance observation' facts he reports. Readers will be motivated to rethink some conventional wisdom on how best to pursue studies of animal behavior. His research activities should inspire other retirees." --Jack DeForest "Kilham's work is a testament to the importance of amateurs to ornithology. . . . Ama