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Keyword: red squirrel

Test of the prey-base hypothesis to explain use of red squirrel midden sites by American martens

Publications Posted on: December 15, 2015
We tested the prey-base hypothesis to determine whether selection of red squirrel (Tamiasciurus hudsonicus) midden sites (cone caches) by American martens (Martes americana) for resting and denning could be attributed to greater abundance of small-mammal prey.

Evidence of autumn breeding in red squirrels, Tamiasciurus hudsonicus, in western Montana

Publications Posted on: December 15, 2015
Red Squirrels (Tamiasciurus hudsonicus) routinely breed biannually in eastern North America, but normally breed once annually in western North America. However, a postpartum estrus resulting in two breeding seasons per year has been documented within the maritime region of British Columbia.

Activity patterns of American martens, fishers, snowshoe hares, and red squirrels in westcentral Montana

Publications Posted on: December 15, 2015
We investigated winter activity patterns of American Martens, Martes americana, Snowshoe Hares, Lepus americanus, and Red Squirrels, Tamiasciurus hudsonicus, in westcentral Montana between November 1994 and March 1995 using dual-sensor remote cameras.

A comparison of habitat use and demography of red squirrels at the southern edge of their range

Publications Posted on: November 16, 2009
Populations at the edge of their geographic range may demonstrate different population dynamics from central populations. Endangered Mt. Graham red squirrels (Tamiasciurus hudsonicus grahamensis), endemic to southeastern Arizona, represent the southernmost red squirrel population and are found at lower densities than conspecifics in the center of the range.

Habitat selection is unaltered after severe insect infestation: Concerns for forest-dependent species

Publications Posted on: November 16, 2009
Severe disturbance may alter or eliminate important habitat structure that helps preserve food caches of foodhoarding species. Recent recolonization of an insect-damaged forest by the endangered Mt. Graham red squirrel (Tamiasciurus hudsonicus grahamensis) provided an opportunity to examine habitat selection for midden (cache) sites following disturbance.

Fine-scale analysis of Mount Graham red squirrel habitat following disturbance

Publications Posted on: November 16, 2009
Habitat destruction and degradation are major factors in reducing abundance, placing populations and species in jeopardy. Monitoring changes to habitat and identifying locations of habitat for a species, after disturbance, can assist mitigation of the effects of humancaused or -amplified habitat disturbance.

Reproductive responses of northern goshawks to variable prey populations

Publications Posted on: November 07, 2007
Developing comprehensive conservation strategies requires knowledge of factors influencing population growth and persistence. Although variable prey resources are often associated with fluctuations in raptor demographic parameters, the mechanisms of food limitation are poorly understood, especially for a generalist predator like the northern goshawk (Accipiter gentilis).