Does Mallard clutch size vary with landscape composition: a different view.

From: Wilson Bulletin | Date: December 1, 2003| Author: | Copyright information

We report on the relationship between Mallard (Atlas platyrhynchos) clutch size and cropland area in the landscape in western Minnesota during 1997-1999. We measured clutch size in two types of nest structures and fit a mixed-effects model to the data to examine the relationship. Our model also included covariates to control for the effects of year, nest initiation date, estimated pair numbers, and nest structure type. Unique landscapes associated with each nest (n = 134) ranged from 46.4-84.8% cropland. Clutch size was unrelated to cropland area, nest structure type, and estimated number ...

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