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Behaviour of captive canvasbacks Aythya valisineria fed different diets during winter

Wildfowl

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Abstract

Time activity budget studies were conducted on captive Canvasbacks manintained on ad libitum diets with varying levels of protein and energy during the winter of 1978-79 and 1979-80. No differences could be detected in the behaviour of the ducks as a result of the diets they received. Differences due to season and sex were observed for some behaviours. Activity decreased (P<0.05) during the winter apparently as a mechanism to conserve energy. This decrease occurred in mid-winter irrespective of diet quality and appeared to be an endogenous component of the Canvasbacks' annual cycle. This behaviour pattern has been observed in the wild and seems to persist in captive Canvasbacks.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Behaviour of captive canvasbacks Aythya valisineria fed different diets during winter
Series title:
Wildfowl
Volume
40
Year Published:
1989
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
80-87
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Wildfowl
First page:
80
Last page:
87