Breeding bird survey: Population trends 1966-92
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- Larger Work: Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems
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The North American Breeding Bird Survey (BBS) was begun in 1966 to collect standardized data on bird populations along more than 3,400 survey routes across the continental United States and southern Canada. The BBS has been used to document distributions and establish continental, regional, and local population trends for more than 250 species.
We summarize here survey-wide patterns in the 1966-92 population trend estimates for 245 species of birds observed on a minimum of 40 routes with a mean relative abundance of 1.0 bird per route. Survey-wide trend estimates are also summarized for six groupings of birds, providing insight into broad geographical patterns of population trends of North American birds.
Additional publication details
|Publication type||Book chapter|
|Publication Subtype||Book Chapter|
|Title||Breeding bird survey: Population trends 1966-92|
|Publisher||National Biological Service|
|Publisher location||Washington, D.C.|
|Contributing office(s)||Patuxent Wildlife Research Center|
|Larger Work Type||Book|
|Larger Work Subtype||Monograph|
|Larger Work Title||Our living resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems|