| Abstract: | Mallards (Anas platyrhynchos ) were banded at 4 discrete study areas in New Zealand. We used hunting season recoveries in conjunction with band recovery models to estimate annual survival and recovery rates and to test hypotheses about sources of variation in these rates. Recovery rates varied among the 4 areas and from year to year within areas. Recovery rates were generally higher for young mallards than for adults, and recovery rates of males were higher than those of females. Survival rates varied among the 4 areas and from year to year within some areas. Survival rates of females were lower than those of males, but survival rates of young birds were not consistently lower than those of adults. Average survival rates over all 4 areas were generally lower than averages for North American mallards. |
| Genre: | Article |
| ProdID: | 5222411 |
| Citation Author: | Nichols, J.D.; Williams, M.; Caithness, T. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 636 |
| 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: | 8 |
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| Citation Phsyical Description: | 629-636 |
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| Citation Search Results Text: | Survival and band recovery rates of mallards in New Zealand; 1990; Article; Journal; Journal of Wildlife Management; Nichols, J.D.; Williams, M.; Caithness, T. |
| Citation Start Page: | 629 |
| Citation Volume: | 54 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Survival and band recovery rates of mallards in New Zealand; 1990; Article; Journal; Journal of Wildlife Management; Nichols, J.D.; Williams, M.; Caithness, T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.jstor.org/stable/3809361 |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
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