• Publications
  • Influence
Age-related aspects of Mallard reproduction
W ild dabbling duck fem ales a re know n to b reed as yearlings (Sow ls 1955), bu t their co n trib u tio n to annual recru itm en t in com ­ p ariso n to older b reeders (adu lts) is poorly u n d eExpand
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Use of elevated nest baskets by ducks
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Age-class determination of canvasbacks
A technique was developed to distinguish yearling from adult canvasbacks (Aythya valisineria) in the field during spring on the basis of white flecking on the distal ends of selected wing feathers.Expand
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Electric fences to reduce mammalian predation on waterfowl nests
We evaluated electric fences as predator barriers to reduce high losses of waterfowl nests to mammalian predation at Waterfowl Production Areas (WPAs). The work was done in 1978-81 on 3 paired sitesExpand
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Hatchability Tests with Eggs from Captive Wood Ducks
Abstract The effect of diet and artificial incubation on fertility and hatchability of wood duck (Aix sponsa) eggs and survival of young was measured. Hatchability of eggs from hens fed a dietExpand
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Homing to nest baskets by wild female mallards
A high rate of homing to nest baskets by adult female mallards (Anas platyrhynchos) was observed in prairie potholes of North Dakota. One hundred and thirteen female mallards were caught on nestExpand
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Renesting by canvasbacks in Southwestern Manitoba
Il est demontre que les femelles de Aythia valisineria peuvent effectivement renidifier, bien qu'il y ait une certaine limite dans le temps; cette aptitude a une influence importante sur laExpand
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