Checklists and Databases- Ornithology: the science of birds/checklists

Birds of North America and Hawaii

Avifaunal diversity varies dramatically
throughout the world, with nearly 10,000 species of birds in virtually every terrestrial and aquatic habitat on earth.

North American Bird Information Web Site
*United States
* Alaska
* Hawaii
* Canada
* Mexico

American Ornithologist's Union Checklist of North American Birds
Sibley-Monroe Checklist
List of North American Birds
Birds of the Continental US and Canada

United States Checklists
Audubon in Your Area
U.S. STATE CHECKLISTS
Bird checklists of the United States

Alaska
Alaska Trekker
Breeding Birds of Southeast Alaska
Birds in Alaska
Checklist of Alaska Birds
Wings Over Alaska

Hawaii
Birding Hawaii
Birds of Hawaii
Hawaii Audubon
Hawaii Bird Checklist
Hawaii Birds

Canada
Birding in Canada
Birds- A Virtual Exhibition
Bird Studies Canada
Canada Bird Fact Sheets
Canada's Birds
Nature Canada Birds
Nova Scotia
Quebec
Yukon

Mexico
Birding Mexico
Birds of Mexico
Birdwatching in Mexico
Birds of Mexico-Wikipedia
Museo de las Aves