Methodological differences among laboratories are recognized as significant sources of variation in quantification of hair cortisol concentration (HCC). An important step in processing hair, particularly when collected from wildlife, is the choice of solvent used to remove or "wash" external hair shaft cortisol prior to quantification of HCC. The present study systematically compared methanol a...

The area traversed in pursuit of resources defines the size of an animal's home range. For females, the home range is presumed to be a function of forage availability. However, the presence of offspring may also influence home range size due to reduced mobility, increased nutritional need, and behavioral adaptations of mothers to increase offspring survival. Here, we examine the relationship be...

Context To mitigate conservation conflicts, some jurisdictions translocate large carnivores into novel environments where they have no previous experience. Behavioural responses of these individuals are not typically monitored to evaluate the impacts this management approach on animals or populations. Aims We examined how grizzly bears (Ursus arctos) involved in conflict responded after translo...

By necessity, grizzly bear demographic models have largely ignored spatial considerations (McLellan 1989, Eberhardt et al. 1994, Eberhardt 1995, Hovey and McLellan 1996). However, ignoring spatial heterogeneity is equivalent to assuming that individuals live in a homogeneous environment and that all members of the population experience the same environmental conditions at any point in time (Pul...

Capture-recapture studies are frequently used to monitor the status and trends of wildlife populations. Detection histories from individual animals are used to estimate probability of detection and abundance or density. The accuracy of abundance and density estimates depends on the ability to model factors affecting detection probability. Non-spatial capture-recapture models have recently evolv...