Relative success of overwater and upland mallard nests in southwestern Manitoba
Article Abstract:
A study of overwater and upland nests of mallards (Anas platyrhynchos) in southwestern Manitoba reveals that overwater nests have higher success rates than upland nests. Although parasites such as redheads (Aythya americana) destroy the eggs of overwater nesting mallards, the success rate of upland nests (12.2%) is still less than that of overwater nests (43. 9%). Traditional studies in nesting do not account for the overwater nesting in mallards and are inadequate.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 1993
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Estimating the nest-success rate and the number of nests initiated by radiomarked mallards
Article Abstract:
A method is presented to calculate mallard nesting behavior. Though similar to current nest-success models, it allows for incomplete observation of initiated nests, incorporates newly encountered nest detection probabilities and relaxes the equal daily survival rate assumption.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 2003
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Social indices of breeding productivity in parkland mallards
Article Abstract:
Social indices are developed to assess breeding productivity of waterfowl in parkland mallards. The development of sightability-adjustment factors for pair and duckling surveys has increased the utility of duckling:pair ratios as indices of breeding productivity in mallards.
Publication Name: The Journal of Wildlife Management
Subject: Zoology and wildlife conservation
ISSN: 0022-541X
Year: 2008
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