The North American Breeding Bird Survey is a cooperative effort between the United States and Canada. The bird survey is a long-term, large-scale, international avian monitoring program started in 1966 to track the status and trends of North America's birds.
If significant declines are detected, causes can then be identified and action taken, to reverse them before populations reach critically low levels.
Breeding Bird Survey State Coordinator
Sutton Avian Research Center
Produced by Playa Lakes Joint Venture.