Feeding site selection by Wigeon Anas penelope in relation to water
作者:
PETER MAYHEW,
DAVID HOUSTON,
期刊:
Ibis
(WILEY Available online 1989)
卷期:
Volume 131,
issue 1
页码: 1-8
ISSN:0019-1019
年代: 1989
DOI:10.1111/j.1474-919X.1989.tb02736.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
The feeding sites of European Wigeon Anas penelope are always close to water. Initial studies suggest that this is primarily an anti‐predator behaviour rather than a requirement for drinking and bathing. Vigilance and flock‐size measurements at varying distances from water support this hypothesis. However, birds will feed away from water if grass biomass is greater further away. The end of the shooting season also causes birds to feed further away from wa
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