Northern Prairie Wildlife Research Center
Waterfowl Communities in the Northern Plains
Lesser Scaup. -- This species has a distribution centered farther north
than any other considered in this chapter. Its highest densities are reported
in Alaska and the Northwest Territories. The stratum containing the Woodworth
Study Area is in the lowest quartile for average density. Continental population
of scaup showed no linear trend; in contrast, the population in the Woodworth
Study Area increased throughout the study period (Fig. 13).
At Woodworth, lesser scaup and wetland counts were not related. Johnson
and Grier (1988) found moderately high correlation coefficients (0.20-0.40)
for the general area. The best model for this species included both May weather
variables, counts being highest in years with warm temperatures and much precipitation.
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