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Comparative productivity of American black ducks and mallards nesting on Chesapeake Bay Islands

Canadian Journal of Zoology

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Abstract

The authors estimated laying dates, clutch sizes, and nest success rates of sympatrically breeding populations of American black ducks (Anas rubripes ) and mallards (Anas platyrhynchos ) on Chesapeake Bay islands between 1986 and 1989. Neither average laying date nor clutch size differed between black ducks and mallards. Nest success rates were higher for mallards in 2 of 4 years, but were area dependent.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparative productivity of American black ducks and mallards nesting on Chesapeake Bay Islands
Series title:
Canadian Journal of Zoology
Volume
70
Issue:
2
Year Published:
1992
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
225-228
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Canadian Journal of Zoology
First page:
225
Last page:
228
Number of Pages:
4