Desert bighorn, forage competition and zoogeography

Publication Type:

Journal Article

Authors:

Bailey, James A.

Source:

Wildlife Society Bulletin, The Wildlife Society, Volume 8, Issue 3, p.208-216 (1980)

Call Number:

A80BAI01IDUS

URL:

http://www.jstor.org/stable/3781692

Keywords:

bighorn sheep, Ovis canadensis, Ovis canadensis californiana

Abstract:

The zoogeographic history of bighorn sheep (Ovis canadensis) suggests desert bighorns are Pleistocene relict populations not well adapted to their arid environments. Adaptations to northern latitudes and adaptations related to the predator-evasion strategy of bighorns are not well suited to deserts. These adaptations include a gestation period fitting no predictable pattern of precipitation on American deserts, a small litter size, primarily diurnal activity, sociality, a dependence upon visual detection and communication of predators before escaping to steep terrain, and reliance upon learning to develop traditions of habitat use. Understanding the zoogeography of bighorns enhances our ability to manage desert sheep and emphasizes the scientific, philosophical, educational, and aesthetic values of these animals.