Manual of Ornithology: Avian Structure and Function
National Geographic Field Guide to the Birds of North America, 7th Edition
The Sibley Field Guide to Birds of Eastern North America: Second Edition
Sibley Birds West: Field Guide to Birds of Western North America
National Geographic Field Guide to the Birds of North America, Sixth Edition (National Geographic Field Guide to Birds of North America)
Mammalogy: Adaptation, Diversity, Ecology
The Sibley Guide to Birds, 2nd Edition
Peterson Field Guide to Birds of Eastern and Central North America, 6th Edition (Peterson Field Guides)
The Wildlife Techniques Manual: (Volume 1: Research/ Volume 2: Management)
Mammalogy (Jones & Bartlett Learning Titles in Biological Science)