Habitat Utilization, Interspecific Interactions, and Status of a Recolonized Population of Bighorn Sheep at a Wildhorse Range

Habitat Utilization, Interspefic Interactions and Status of a Recolonized Population of Bighorn Sheep at a Wild Horse Range

Bighorn sheep (Ovis canadensis) diseases: a brief literature review and risk assessment for translocation

Prior to European settlement in western North America, bighorn sheep (Ovis canadensis) were more widespread and abundant than they are today (Buechner 1960). The species arrived via the Bering land bridge approximately 70-100,000 years before the present (YBP) (Kurten and Anderson 1980) and slowly spread to occupy most mountainous regions of western North America from southern British Columbia ...

Habitat Quality in Association with Herd Health in Two Bighorn Sheep (Ovis canadensis canadensis) Populations

Multiple factors have been identified as elements of the respiratory disease complex in Rocky Mountain bighorn sheep (Ovis canadensis canadensis). We hypothesized that differences in health factors and Pasteurellaceae in the upper respiratory tracts could exist between populations of bighorn sheep with and without histories of pneumonic epizootics. We evaluated bighorn sheep in the Big Creek ar...

Sharing of Pasteurella spp. between free-ranging bighorn sheep and feral goats.

Pasteurella spp. were isolated from feral goats and free-ranging bighorn sheep (Ovis canadensis canadensis) in the Hells Canyon National Recreation Area bordering Idaho, Oregon, and Washington (USA). Biovariant 1 Pasteurella haemolytica organisms were isolated from one goat and one of two bighorn sheep found in close association. Both isolates produced leukotoxin and had identical electrophoret...

GIS-based Habitat Models for Bighorn Sheep Winter Range in Glacier National Park, Montana

I used logistic regression to construct bighorn sheep winter range habitat models for 2 study areas in Glacier National Park (GNP), Montana. During 2 winters, habitat use was described through systematic ground surveys supplemented with focal observations, lasting 1-3 days, of recognizable individual sheep. Available habitat was evaluated using 12 habitat parameters, each measured at a 30-by-30...