Age-Specific Breeding Rates of Female Interior Canada Geese

We studied age-specific breeding effort of female interior Canada geese (Branta canadensis interior) near Cape Churchill, Manitoba, 1981-84. We compared the age distribution of 87 known-age females encountered on nests or found with brood patches during trapping operations with the expected frequenc...

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Bibliographic Details
Published in:The Journal of wildlife management 1989-07, Vol.53 (3), p.734-740
Main Authors: Moser, Timothy J., Rusch, Donald H.
Format: Article
Language:English
Subjects:
Age structure
Animal nesting
Aquatic birds
Bird nesting
Birds
Brackish
Branta canadensis interior
Breeding
Female animals
Flocks
Freshwater
Geese
Goslings
Marine
Reproduction
Waterfowl
Young animals
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Summary:We studied age-specific breeding effort of female interior Canada geese (Branta canadensis interior) near Cape Churchill, Manitoba, 1981-84. We compared the age distribution of 87 known-age females encountered on nests or found with brood patches during trapping operations with the expected frequency of known-age geese in the population. Relative breeding rates of 2-, 3-, 4-, 5-, 6-, and ≥7-yearold females were 7, 15, 40, 100, 95, and 94%, respectively. We suggest that females
ISSN:0022-541X
1937-2817
DOI:10.2307/3809205