| 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. |
| Genre: | Article |
| ProdID: | 5222408 |
| Citation Author: | Sauer, J.R.; Droege, S. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 252 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Wilson Bulletin |
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| Citation Number Of Pages: | 14 |
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| Citation Phsyical Description: | 239-252 |
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| Citation Search Results Text: | Recent population trends of the eastern bluebird; 1990; Article; Journal; Wilson Bulletin; Sauer, J.R.; Droege, S. |
| Citation Start Page: | 239 |
| Citation Volume: | 102 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Recent population trends of the eastern bluebird; 1990; Article; Journal; Wilson Bulletin; Sauer, J.R.; Droege, S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://elibrary.unm.edu/sora/Wilson/v102n02/p0239-p0252.pdf |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
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