The Nature Pages

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	A Field Guide to  Hummingbirds of North America  by Sheri L. Williamson Houghton Mifflin, 2002		aves.net
	Although distinctive in their appearance and easy to recognize as a family, hummingbirds are difficult to identify by species. Many of the 31 species that breed in or visit North America are visually similar and only a careful analysis of sounds, behavior and distribution charts can separate them.     This new field guide offers the detailed information on habits, habitats, migratory patterns, physical traits, diet, mating practices and other features needed to make field identifications accurate and definitive.		Nectar Plants that Attract Hummingbirds Agave Claret Cup Cactus White Honeysuckle Red Morning-glory Bottlebrush Western Columbine Lantan Indian Paintbrush Bougainvillea Chaparral Current Mexican Lobelia Mountain sage
	Unlike general guides which rely on illustrations to aid with identification, this book utilizes more than 250 color photos to depict plumage variations within and between species. The book's 31 color plates illustrate 28 species, 7 hybrid combinations, 3 forms of albinism, and 4 species of sphinx moths often mistaken for hummingbirds.		Resources Hummingbirds!
	The author, Sheri L. Williamson, is recognized as one of North America's foremost experts on hummingbirds. She's the co-founder of the Southeastern Arizona Bird Observatory.