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Behaviour patterns of Mallard Anas Platyrhynchos pairs and broods in Minnesota and North Dakota

P. J. Pietz, Auteur ; D. A. Buhl, Auteur

Dans Wildfowl (50 1999)

Few studies have quantitatively examined Mallard behaviour in North America during the breeding season. We estimated diurnal time budgets of unmarked Mallard males, females, and broods from over 1,200 hours of observations at two study areas in [...]

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