Mallard Population Dynamics and Management Models

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Abstract
Production equations are specified that allow more precise explanation and quantification than previously available of relationships between the breeding population of the mallard (Anas platyrhynchos) and its breeding environment. A model is detailed whereby maximum physical sustained yield may be identified under restrictive assumptions. A previously reported management model is shown to have hidden theoretical difficulties, and a different approach, consistent with theory, is developed through the use of mortality factors. This approach allows systematic determination of bag limit and hunting season length. The need for more accurate estimates of natural mortality rates so that waterfowl populations can be managed more scientifically is emphasized.

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