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Sources of Variation in Waterfowl Survival Rates

David G. Krementz, Richard J. Barker and James D. Nichols
The Auk
Vol. 114, No. 1 (Jan., 1997), pp. 93-102
DOI: 10.2307/4089068
Stable URL: http://www.jstor.org/stable/4089068
Page Count: 10
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Sources of Variation in Waterfowl Survival Rates
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Abstract

Because of the need to manage hunted populations of waterfowl (Anatidae), biologists have studied many demographic traits of waterfowl by analyzing band recoveries. These analyses have produced the most extensive and best estimates of survival available for any group of birds. Using these data, we examined several factors that might explain variation among annual survival rates to explore large-scale patterns that might be useful in understanding waterfowl population dynamics. We found that geography, body mass, and tribe (i.e. phylogeny) were important in explaining variation in average waterfowl survival rates.

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