Home Ranges, Core Use Areas, and Dietary Habits of Ferruginous Hawks in Southcentral Washington

Publication Date

8-1996

Type of Culminating Activity

Thesis

Degree Title

Master of Science in Raptor Biology

Department

Biology

Supervisory Committee Chair

Marc J. Bechard

Abstract

The ferruginous hawk (Buteo regalis) is the largest Buteo, or soaring hawk, in North America (Brown and Amadon 1968, Palmer 1988). Adults measure 59 - 69 cm from beak to tip of tail, with a wingspan of 122 - 142 cm, and weigh from 977 - 2074 g (Palmer 1988, Bechard and Schmutz 1995). The species occurs in two color phases: a light phase, that has predominantly white undersides with rufous colored thighs and shoulders, and a dark phase, that appears all dark in flight except for a white tail and white primary wing feathers (Schmutz and Schmutz 1981).

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