“Researchers writing about comparative human and nonhuman cognition always make brief, obligatory reference to the underlying neurological and hormonal systems, but Marzluff and Angell actually provide us with the details. In lucid, logical, and articulate prose, they carefully explain all the interrelated mechanisms involved in the fascinating behavior patterns of their corvid subjects and how these mechanisms relate to those of humans. Their book is indeed a gift, not only to those of us eager to learn about corvid behavior but also but also to those who wish to understand the bases for these actions.”