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To most observers, molt seems an overwhelming subject. But birders use many aspects of molt more than they realize--to distinguish juvenile birds from adults, to pick out an individual hummingbird from among dozens visiting a feeder, and much more. And for those whose interest g…
To most observers, molt seems an overwhelming subject. But birders use many aspects of molt more than they realize--to distinguish juvenile birds from adults, to pick out an individual hummingbird from among dozens visiting a feeder, and much more. And for those whose interest g…
This illustrated guide to the vagrant birds that occur throughout North America covers 262 species originating from three different regions--the Old World, the New World tropics, and the world's oceans. It explains the causes of avian vagrancy and breaks down patterns of occurre…
On t.p.: A field guide to the natural history of North American birds : including all species that regularly breed north of Mexico.
On t.p.: A field guide to the natural history of North American birds : including all species that regularly breed north of Mexico.
On title page: A field guide to the natural history of North American birds : including all species that regularly breed north of Mexico.
"From David Sibley, the renowned artist & birder, heir to the mantle of Roger Tory Peterson, comes this landmark addition to Knopf's National Audubon Society publishing program : a field identification guide to North American birds containing his superbly lucid & comprehensive t…
"Easily identify bird species west of the Great Plains with this comprehensive photographic guide. A book for avid bird watchers young and old! These pages feature high-quality photographs and full-pages details of well-known and rare species of Western North American birds, for…