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Abstract
North American Breeding Bird Survey data for the period 1966-1987 indicate that Eastern Bluebird (Sialia sialis) populations declined during the 1970s, primarily in association with either severe winters or severe spring storms. In recent years, bluebird populations have increased to levels similar to those observed during the first year (1966) of the survey. Survey results suggest that climate has an important role in affecting short-term population declines in bluebirds.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Recent population trends of the eastern bluebird |
| Series title | The Wilson Bulletin |
| Volume | 102 |
| Issue | 2 |
| Year Published | 1990 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 239-252 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Wilson Bulletin |
| First page | 239 |
| Last page | 252 |
| Google Analytic Metrics | Metrics page |