Portland State University. Department of Biology
Richard B. Forbes
Date of Award
Master of Science (M.S.) in Biology
1 online resource (37 p.)
Pikas, Oregon -- Mount Hood
Observations or a small group of pikas, (Ochotona princeps) occupying a southwest facing roadfill on Mt. Hood, Oregon (1518 m) were made during the fall or 1976. Territorial sizes of 305.5 m2 and 121 m2 were determined based on territorial displays. These territories were compared with those observed in other studies. The mean distance to the nearest neighbor was 15.1 m. A pair relationship between two of the pikas and a dominance order are discussed. The seasonal progression of the haypiles and the reactions of the pikas to other animals are also noted.
Frazier, Nancy A. Ewen, "A behavioral study of a small group of pikas (Ochotona princeps) on Mt. Hood, Oregon" (1977). Dissertations and Theses. Paper 2518.