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Auteur H W Heusmann |
Documents disponibles écrits par cet auteur (3)
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Article
H W Heusmann, Auteur ; Jason T. Stolarski, AuteurIncreasing populations of Hooded Mergansers (Lophodytes cucullatus) (Heusmann et. al 2000) may be out-competing Wood Ducks (Aix sponsa) for nest boxes on some sites in Massachusetts. Hooded Mergansers' use increased from ≤2% of boxes in 1979 to [...]![]()
Article
Breeding populations of Mallards (Anas platyrhychos) have declined 38% in the northeastern United States over the past 17 years. One reason for this may be the reduction of a unique wintering habitat, artificial feeding sites. I hypothesize that[...]




