Two Yearling Grizzly Bears Found Dead in Grand Teton National Park

Park officials discovered the bodies of two young grizzly bears in a closed area of Grand Teton National Park on Tuesday, May 13. The yearling bears were found about 250 yards apart, with evidence suggesting they were killed by a larger bear.

Following the discovery, park staff conducted extensive patrols around the Colter Bay area, Highway 89, and nearby locations to monitor for bear activity.

Lone adult female grizzly bear
During these patrols, officials spotted a lone adult female grizzly bear with red ear tags, identified as GB1063. This bear had recently been seen with her yearling cubs, reports EastIdahoNews.com.

“Bears exhibit a range of fascinating behaviors influenced by their biological needs, social structures, and environmental factors,” said Grand Teton National Park Bear Biologist Justin Schwabedissen. “While it is incredibly sad to see a grizzly bear lose its cubs, depredation by other bears is a natural source of cub mortality in the Greater Yellowstone Ecosystem and has previously occurred in Grand Teton.”

Developed areas
In recent weeks, GB1063 and her cubs had been seen in developed areas around Colter Bay. Park staff had hazed the bears when they stayed too long in these areas, following park policy to reduce potential conflicts between humans and wildlife.

Evidence suggests a male grizzly bear likely caused the separation of the yearlings from their mother and killed them. The status of a third yearling cub remains unknown.

Park officials continue to monitor the area and remind visitors to remain bear aware by carrying bear spray, keeping a safe distance from wildlife, and reporting bear sightings to rangers.