Abstract
Aerial surveys were used to determine habitat use and distribution of sympatric pronghorn antelope ( Antilocapra americana ) and mule deer ( Odocoileus hemionus ) populations in eastern Montana from 1982 to 1987. Antelope seasonally occupied only 1–10%, and deer only 9–20%, of the study area. Grassland habitats were used most frequently by antelope; badlands, bunchgrass prairies, and hardwood draws were used most frequently by deer. Some overlap in habitat use was evident but there was little spatial overlap. Maximum overlap in both habitat use and distribution occurred during autumn when antelope moved into deer habitat. There appeared to be little opportunity for interspecific competition during this study based on the high degree of spatial segregation.
Published Version
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