A field guide to Hummingbirds of North America. Covering 31 species, this is the most comprehensive field guide to North American Hummingbirds. More than 220 color photographs and 34 color range maps
Sheri L. Williamson is one of North America's foremost experts on hummingbirds and cofounder of the Southeastern Arizona Bird Observatory. Her intimate knowledge of hummingbirds comes from more than a decade of intensive study, including hundreds of hours of field observation and the banding of several thousand individuals of 16 species. She leads birding and natural history tours and lectures on hummingbirds and other wildlife of the Southwest. Her articles have appeared in a variety of scientific and popular publications.
Roger Tory Peterson, one of the world's greatest naturalists, received every major award for ornithology, natural science, and conservation, as well as numerous honorary degrees, medals, and citations, including the Presidential Medal of Freedom. The Peterson Identification System has been called the greatest invention since binoculars, and the Peterson Field Guides® are credited with helping to set the stage for the environmental movement.