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Full-color illustrations and sample journal pages from notable naturalists show how to put each lesson into practice
and safety guide
unsettles her decisions and complicates her life
A unique logbook
inspiring--and accessible
Ravens in Winter by Bernd Heinrich Cardinals Full-color illustrations and sample journal"One of the most interesting discoveries I've seen in animal sociobiology in years." E. O. Wilson Why do ravens, often considered solitary birds, share food with one another in the harsh months of winter? At first glance, the behavior seemed to defy the rules of evolutionary biology. Yet the more biologist Bernd Heinrich observed these intelligent corvids, the more fascinating the puzzle became. In Ravens in Winter, Heinrich presents the
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