Den Collapse Kills Female Polar Bear and Two Newborn Cubs

  • Peter L. Clarkson
  • Doug Irish
Keywords: Animal mortality, Avalanches, Denning, Meteorology, Necropsy, Polar bears, Snow, Yukon North Slope


A female polar bear (Ursus maritimus) and two newborn cubs were found dead at their den site on the Yukon coast. The site investigation and necropsy indicated that den collapse was the cause of death.

Key words: polar bear, Ursus maritimus, den collapse, mortality, Yukon coast