06/19/2026
An elk cow lost two calves to bears, climbed a mountain to hide the third, and taught her daughters the route.
Cow No. 15 was one of twenty-five elk brought from Land Between the Lakes in Kentucky to the Great Smoky Mountains in 2001. She had never seen a black bear. Land Between the Lakes does not have them. The Smokies have the densest black bear population in the eastern United States, roughly 1,600 animals across eight hundred square miles. Nobody told the elk. They were trucked in, held in a pen on Big Fork Ridge for disease testing, released into the Cataloochee Valley, and left to figure out the rest.
Her first spring in Cataloochee, Cow 15 gave birth in the open field the way elk calve across most of their range. Find a flat spot with good sightlines, drop the calf, stand guard. In the Rockies and the northern plains, that strategy works because the primary threats, wolves and mountain lions, hunt by sight and can be detected at distance. A cow elk in open ground can see trouble coming and either fight or run.
The Smokies do not work that way. A black bear hunting a newborn calf does not cross an open field. It comes through the timber, follows the scent of the birth, and arrives at the calf before the cow knows it is there. Cow 15's first calf was killed by a bear.
The second year, she adjusted. She moved from the center of the field to the edge of the wood line to give birth. Partial cover. Shorter detection distance for a bear approaching through the trees. Wildlife biologist Joe Yarkovich, who tracked her through a GPS collar, recorded the shift. The strategy was better than the open field. A bear killed that calf too.
The third year, Cow 15 left Cataloochee entirely. Her collar data showed her traveling six miles from the valley floor and climbing roughly 5,000 feet to Balsam Mountain, a densely forested ridge in the southeastern corner of the park. She gave birth there, in heavy timber at high elevation, far from the valley where bears had killed her first two calves. The calf survived. She brought it back down to Cataloochee after it was strong enough to travel.
She did the same thing every year after that. Every spring, the collar data showed the same pattern. Leave Cataloochee. Climb Balsam Mountain. Give birth in the dense forest. Return to the valley with the calf. Her female offspring adopted the route and repeated it. A learned behavior, passed from mother to daughter, that did not exist in the herd's behavioral repertoire before Cow 15 invented it through two dead calves and a six-mile walk uphill.
The first couple years they were here, bears were killing most of their calves, Yarkovich told the Smoky Mountain News. The elk had never seen bears before, and they did not know how to keep their calves safe. Then Yarkovich watched the collar data change. The calving locations shifted. The open fields emptied during birth season. The cows started dispersing into higher, denser cover across the park. They have figured it out, he said. Now predation from bears is a lot lighter.
The park also tried a direct intervention. Between 2006 and 2008, biologists trapped and relocated forty-nine black bears from the primary calving areas in Cataloochee to the southwestern corner of the park, roughly forty-five miles away. The intent was to reduce bear density around newborn calves during the critical first weeks. A USGS study published in 2023 found the bear removal had no long-term effect on elk calf recruitment. The bears came back. Other bears filled the vacancies. The population-level predation pressure returned to baseline within a few years. The only thing that permanently reduced calf mortality was the elk learning where to hide.
Fifty-two elk were released in the Smokies between 2001 and 2002, twenty-five from Kentucky and twenty-seven from Elk Island in Alberta. The population had a negative growth rate for the first several years because bear predation on calves was so high. The park trapped and relocated forty-nine bears from the calving areas between 2006 and 2008 to buy the herd time. A USGS study published in 2023 found the bear removal had no long-term effect on calf recruitment because bears eventually reoccupied the area. But by the time they did, the elk had already changed. The cows that kept losing calves in the open fields had stopped using the open fields. Their daughters never started.
Today, roughly two hundred elk live in the park. The herd survived because Cow 15 and mothers like her figured out what no management plan could have prescribed. She lost two calves, walked six miles straight up a mountain, gave birth in timber dense enough that a bear could not find her, and carried the answer back down to the valley in the form of a living calf and a route her daughters would follow for the rest of their lives.
Source: Great Smokies / Smoky Mountain News / Smokies Life / USGS, 2023.
