Denning of grizzly bears in the Yellowstone National Park area

Bears: Their Biology and Management
By: , and 

Links

Abstract

Radiotelemetry was used to locate 101 grizzly bear (Ursus arctos) dens from 1975 to 1980; 35 dens were examined on the ground. Pregnant females denned in late October, and most other bears denned by mid-November. Duration of denning average 113, 132, and 170 days for males, females, and females with new cubs, respectively. Males emerged from mid-February to late March, followed by single females and females with yearlings and 2-year-olds. Females with new cubs emerged from early mid-April. Den sites were associated with moderate tree cover (26%-75% canopy cover) on 30°-60° slopes. Dens occurred on all aspects, although northerly exposures were most common. Grizzly bears usually dug new dens but occasionally used natural cavities or a den from a previous year. Males usually dug larger dens than females with young. Eight excavated and 2 natural dens of the 35 examined dens were used for more than 1 year.

Study Area

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Denning of grizzly bears in the Yellowstone National Park area
Series title Bears: Their Biology and Management
DOI 10.2307/3872814
Volume 6
Year Published 1986
Language English
Publisher International Conference on Bear Research and Management
Publisher location New York, NY
Description 7 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Bears: Their Biology and Management
First page 111
Last page 117
Country United States
State Idaho;Montana;Wyoming
Other Geospatial Yellowstone National Park