7 results on '"Peterjohn, Bruce"'
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2. Population Trends of Black Terns from the North American Breeding Bird Survey, 1966-1996
3. First-Time Observer Effects in the North American Breeding Bird Survey
4. Evaluating Causes of Population Change in North American Insectivorous Songbirds
5. Some Considerations on the Use of Ecological Models to Predict Species' Geographic Distributions
6. Observer Differences in the North American Breeding Bird Survey
7. Population Trends of Woodland Birds from the North American Breeding Bird Survey
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