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Survival and band recovery rates of sympatric American black ducks and mallards

Journal of Wildlife Management

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Abstract

Banding and recovery data from American black ducks (Anas rubripes) and mallards (A. platyrhynchos) banded in the same breeding or wintering areas over the same time periods were used to estimate annual survival and band recovery rates. Recovery rates, based on preseason bandings, were very similar for sympatric black ducks and mallards and exhibited similar patterns of year-to-year variation for the 2 species. Tests for differences between the species in annual survival rates yielded equivocal results. We tentatively conclude that annual survival rates of mallards generally were not higher than those of black ducks banded in the same areas. The apparent difference in population status between black ducks and eastern mallards does not seem to result from differences in mortality rate. Nevertheless, we should attempt to identify management practices that might increase survival probabilities of black ducks.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Survival and band recovery rates of sympatric American black ducks and mallards
Series title:
Journal of Wildlife Management
Volume
51
Issue:
4
Year Published:
1987
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
700-710
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Wildlife Management
First page:
700
Last page:
710
Number of Pages:
11