Patterns of Variation in Clutch Sizes in a Guild of Temperate-Nesting Dabbling Ducks
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منابع مشابه
Temporal Flexibility of Reproduction in Temperate-Breeding Dabbling Ducks
—I compared nesting intervals during three consecutive years in five species of temperate-nesting dabbling ducks (Mallard [Anas platyrhynchos], Northern Pintail [Anas acuta], Northern Shoveler [Anas clypeata], Blue-winged Teal [Anas discors], Gadwall [Anas strepera]) and assessed whether differences existed in timing of refractoriness. Most nesting by females of all five species ended by the su...
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Bright coloration in male birds is typically thought to be driven by sexual selection (female choice or male–male competition). Bird species often vary in the intensity of bright coloration, but few studies have addressed this cross-species variation. Potentially this variation could result from either variation in female preferences or in the relative costs of male traits. Species of dabbling ...
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