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Survival in wood duck broods

Journal of Wildlife Management

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Abstract

Mortality of wood ducklings (Aix sponsa) from hatching to 6 weeks of age averaged 47 percent during a 4-year study at the Patuxent Wildlife Research Center. Over 90 percent of the total mortality occurred during the first 2 weeks of life. Brood bonds began to dissolve after the fifth week. hlortality after 2 weeks was so low that Class I1 broods were believed to provide reliable estimates of production to flying age. Once-a-week brood censuses proved unreliable in estimating survival, but twice-a-xveek counts were accurate enough to estimate total broods and survival to Class II age.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Survival in wood duck broods
Series title:
Journal of Wildlife Management
Volume
33
Issue:
1
Year Published:
1969
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
73-76
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
73
Last page:
76
Number of Pages:
4