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Evaluation of a Mallard Productivity Model


Flow Chart
Figure 1.  Simplified flow chart illustrating major components of mallard productivity model. (See text for explanation of numbers.)


Model Output
Figure 2.  Example of model output showing nesting histories of 16 simulated hens under average conditions (above) and with 13 May snowstorm (below).


Simulated Active Nests
Figure 3.  Number of simulated active nests, by day within breeding season, for average (control) situation and five modifications.

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