Arctic Bear Mother Takes In Cub in Infrequently Documented Case

View: Video shows mother polar bear with two cubs – including an adopted one

Scientists tracking free-roaming polar bears in northern Canada observed something remarkably uncommon this fall: a mother bear adopting a cub that was not biologically her own.

The half-decade-old maternal bear and her nearly year-old cubs were spotted and captured on camera during the yearly polar bear migration along the Hudson Bay's western shore near the Manitoba town of Churchill, an locale known for its concentration of Arctic bears.

"It's unusual," remarked a researcher with an international bear organization. "We don't really know why it happens...but we know it doesn't happen often at all."

It's only the thirteenth documented instance of adoption out of nearly five thousand bears studied for nearly five decades in that region.

The mother bear was first captured as she emerged from her maternity den this springtime. At the time, she had a single offspring, which researchers tagged for research.

In the autumn, she was spotted once more, but this time with two cubs - the original cub and a second without a tag. Researchers aren't sure what happened to the second cub's biological mother, but they are attempting to identify her using genetic samples.

"These animals need all the help they can get in the current era with climate change," commented a wildlife biologist. "When mother bears have the opportunity to take in another cub and raise it and see it to independence, it's a positive development for the population."

Polar bears in the wild only have a fifty-fifty survival rate of living into maturity, but having a mother caring for them boosts their chances.

The cubs are reported as healthy, researchers said, and they will probably remain with their mother until they are about two-and-a-half years old.

Next, the family is anticipated to venture out to sea ice, where the youngsters will learn from their mother how to hunt seals and survive on their own.

"It's just nice to know that the bears are caring for each other," concluded the scientist.
Marvin Schroeder
Marvin Schroeder

A science writer and tech enthusiast with a passion for exploring cosmic phenomena and emerging technologies.