Abstract
ALTHOUGH many cases of nest parasitism by cowbirds have been reported from Nebraska, studies of the incidence of parasitism are few. During the summer of 1960 the University of Nebraska Agricultural Experiment Station, in cooperation with the Nebraska Game, Forestation, and Parks Commission, conducted a survey to determine utilization of roadsides for nesting by upland game birds. The nature of the survey was such that it enabled the investigators to keep accurate records of the songbird nests encountered during the field work. Thus it was possible to determine the degree of parasitism on species such as the meadowlark (Sturnella species), Dickcissel (Spiza americana), Red-winged Blackbird (Agelaius phoeniceus), Brown Thrasher (Toxostoma rufum), and Mourning Dove (Zenaidura macroura), which are commonly found nesting in the roadsides of Nebraska. SURVEY AREA
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