• Audubon Society: Birds and Science

• BirdLife International

• Bird Fact Sheets (Canadian Wildlife Service Hinterland Who's Who)

• Bird Studies Canada

• Birdnet, The Ornithological Information Source

• Canadian Bird Trends (Environment Canada)

• Nature Canada: Bird Conservation

• The Peregrine Fund World Center for Birds of Prey

• Whooping Crane Conservation Association

• Backyard Bird Feeding (U.S. Fish and Wildlife Service)

• Bird Feeding and Nest Boxes for Birds (Hinterland Who's Who Issues and Topics)

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• American Birding Association

• Birdsource: Birding with a Purpose (Audubon Society and Cornell Lab of Ornithology)

• Federation of Alberta Naturalists: Includes information on a number of projects including the Alberta Bird Atlas, Alberta Birdlist Program, Important Bird Areas, and Prairie Nest Records Scheme.

• Hummingbirds.net: Includes spring migration map showing first hummingbird sightings in Canada.

• Virtual Birder Magazine