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American Birding Association Birder's Guides
Birds of North America Life Histories
About... for Children
AMNH Type Specimens
AOU Ornithological Monographs
Archives of American Falconry
Christmas Bird Counts
Birds of Africa
Birds of the Western Palearctic
BOU Checklists
Current Ornithology
Falcon Finding Guides
Handbook of Birds of the World
HANZAB
Helm Where to Watch
Kaufman Guides
Morse Guides
MP3 Sound Collections
New Naturalists Library
National Geographic
Nuttall Ornithological Club
Oxford Bird Families
Peters Checklist Birds of the World
Peterson Field Guides
Poyser Monographs
Prion Birdwatchers' Guides
Series in Ornithology
Stokes
Thayer Birding Software
Sibley Guides
Studies in Avian Biology
Traveller's Wildlife Guides