
Allegheny Front Hawk Watch

Bear Divide Migration Count

Braddock Bay Raptor Research

Denver Field Ornithologists

Derby Hill Bird Observatory

Ecovida-Aetos HawkWatch

Hawk Mountain Sanctuary

HawkWatch International

Keweenaw Bird Research Group

Mackinac Straits Raptor Watch

Rocky Mountain Eagle Research Foundation

Tropicos Colombia

Whitefish Point Bird Observatory