In 1934, Roger Tory Peterson's Field Guide to the Birds,the "Birder's Bible," launched the most respected nature series of all time, setting the standard of excellence for field guides. The series has grown to include this title, which employs the handy Peterson Identification System. The nests and eggs of all the common birds found west of the Mississippi are covered in detail - 520 species in all. More than 400 photographs show the nests and eggs in their typical habitats. Descriptive text includes colour, shape, and number of eggs for each species, plus information on nesting materials, construction, and dimensions.