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Breeding Bird Census

Ruby-throated Hummingbird summer range

Range of the Ruby-throated Hummingbird during breeding season, based on Breeding Bird Survey data.

Map from the Patuxent Wildlife Research Center
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Gough, G.A., Sauer, J.R., Iliff, M. Patuxent Bird Identification Infocenter. 1998. Version 97.1. Patuxent Wildlife Research Center, Laurel, MD.

Christmas Bird Count Data

Ruby-throated Hummingbird winter range

Winter range of the Ruby-throated Hummingbird, based on Christmas Bird Count data.

Map from the Patuxent Wildlife Research Center.
Gough, G.A., Sauer, J.R., Iliff, M. Patuxent Bird Identification Infocenter. 1998. Version 97.1. Patuxent Wildlife Research Center, Laurel, MD.

Visit the Audubon Christmas Bird Count web site to create your own range maps.

Additional Web Resources

 

The Avian Knowledge Network collects data from thousands of locations and multiple data sets.

The Birds of North America web site has excellent distribution information, annual membership required.

Visit the eBird web site to report sightings of the American Goldfinch and to view current and some historical information on a state-by-state basis. Information based on reports from birders in the field.