This book offers more information on the feeding habits of North American birds than has ever before been available. Here we find out what species appear in different parts of North America, how often they visit feeders, and which foods they prefer. The fascinating and sometimes peculiar habits of each species are described in anecdotal accounts. We learn, for example, that crows post sentinels to watch for danger while the flock is feeding, that a red-winged blackbird may not sample a novel food until it sees another try it first, and that yellow-bellied sapsuckers enjoy sugar water and jelly. Clear, charming illustrations are a helpful tool for identifying each bird, maps show distribution and frequency of feeder visits, and charts provide information on abundance during specific months of the year. Birds at Your Feeder is based on data collected by Project FeederWatch, an extensive, long-term study sponsored by, among others, the National Audubon Society and the Canadian Nature Federation.