Abstract
Every June, birders across the country polish their binoculars, lace up their boots, and head off to count birds. The results from the Breeding Bird Survey, an annual event since 1966, reveal changes in bird populations across the country. Ornithologists can access and analyze the findings of surveys through 1999 at the Web site of the U.S. Geological Survey's Patuxent Wildlife Research Center in Laurel, Maryland.
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