| Abstract: | Because of low population levels, there were especially restrictive hunting regulations between 1958-1965, including complete closures during the 1960-1963 seasons, for canvasback (Aythya valimeria) and redhead (A. americana) ducks. Banding data from 1952 through 1965 indicated that restrictive regulations reduced both harvest and annual mortality rates. During the period with very restrictive regulations, annual mortality-rate estimates ranged from 14 to 21 percent, much lower than before this period when estimates were 50 percent or higher. |
| Genre: | Article |
| ProdID: | 5220658 |
| Citation Author: | Geis, A.D.; Crissey, W.F. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 866 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Wildlife Management |
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| Citation Number Of Pages: | 7 |
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| Citation Phsyical Description: | 860-866 |
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| Citation Search Results Text: | Effect of restrictive hunting regulations on canvasbacks and redhead harvest rates and survival; 1969; Article; Journal; Journal of Wildlife Management; Geis, A.D.; Crissey, W.F. |
| Citation Start Page: | 860 |
| Citation Volume: | 33 |
| Citation Year: | 1969 |
| Type: | citation/reference |
| Text: | Effect of restrictive hunting regulations on canvasbacks and redhead harvest rates and survival; 1969; Article; Journal; Journal of Wildlife Management; Geis, A.D.; Crissey, W.F. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.jstor.org/stable/3799317 |
| Date Other: | Wed, 16 Jun 2010 12:17 -0500 |
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