The Warbler Guide
Peterson Reference Guide to Sparrows of North America (Peterson Reference Guides)
Hawks in Flight: Second Edition
The Sibley Field Guide to Birds of Eastern North America: Second Edition
The Shorebird Guide
Warblers of North America: A Comprehensive Guide to All Species
A Field Guide to Hawks of North America (Peterson Field Guide Series)
Sibley's Warblers of Eastern North America (Foldingguides)
Gulls Simplified: A Comparative Approach to Identification