The Sibley Field Guide to Birds of Eastern North America: Second Edition
Handbook of Bird Biology (Cornell Lab of Ornithology)
Manual of Ornithology: Avian Structure and Function
The New Stokes Field Guide to Birds: Eastern Region
National Geographic Field Guide to the Birds of North America, 7th Edition
Sibley Birds West: Field Guide to Birds of Western North America
The Wildlife Techniques Manual: (Volume 1: Research/ Volume 2: Management)
A Season on the Wind: Inside the World of Spring Migration
Peterson Field Guide to Birds of Eastern and Central North America, 6th Edition (Peterson Field Guides)