Abstract
Of the many ecological studies of California quail (Callipepla californica) (summarized by Leopold 1977), few dealt with the habitat requirements of populations in areas defined by Leopold as humid forest ranges. These ranges encompass forest and valley habitats from Monterey, California to Vancouver Island, British Columbia. Barclay and Bergerud (1975) studied population dynamics of California quail on Vancouver Island and observed that most coveys were associated with cultivated lands and pastures. Crawford (1978) found that early stages of grassshrubland and cultivated areas were preferred in western Oregon. The objectives of our study were to investigate the relationships between California quail, cultivation, and plant succession; specifically, we examined the effects of disking, corn and sudan plantings, and wheat plantings on a population of California quail in the Willamette Valley, Oregon.
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