Evaluations of Duck Habitat and Estimation of Duck Population Sizes with a Remote-Sensing-Based System

Definitions

Definitions of the terms wetland, wetland area, wetland basin, and pond follow Cowardin (1982). We define four essential terms for describing nesting ducks: A successful clutch is a clutch of eggs of which one or more eggs hatch even if one or more dead young are found at the nest site (see successful, Klett et al. 1986). A successful nesting attempt is a hen's attempt to nest when that attempt results in a successful clutch. Clutch success is the probability that a clutch will be successful and is directly equivalent to nest success as defined by Klett et al. (1986). Hen success is the probability that a hen will make at least one successful nesting attempt during a single breeding season.

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