A Model of Habitat Use by Breeding American Black Ducks

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Abstract
We developed a linear-logistic model of habitat use for American black ducks (Anas rubripes) breeding in Maine [USA] during 1986 and 1987. The model predicted wetland use by black ducks using perimeter of surface water, area of flooded timber, presence or absence of beaver (Castor canadensis), and visibility of an occupied, human dwelling. The model was robust and had an overall correct-classification rate of 80%. Wetlands influenced by beaver provided quality habitat for black ducks; the management of beaver populations possibly affects quantity and quality of waterfowl habitat. An increase in housing developments could have an adverse effect on the quality of wetland habitats for black ducks in Maine.

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