Vydavatel US Fish and Wildlife Service, Department of the Interior
Datum vydání před téměř 10 roky
US
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This report summarizes the Waterfowl Breeding Population and Habitat Survey and Waterfowl Production and Habitat Survey for southern Saskatchewan during 1960. The primary purpose of the breeding survey is to provide information on spring population size and trajectory for certain North American duck species, and the primary purpose of the production survey is to provide information on duck production from the midcontinent breeding areas. Survey methods, habitat and weather conditions; breeding population indices; production indices; and tables of population estimates, waterfowl broods, and latenesting indices are provided.