WINNIPEG -- A Manitoba bear rescue is asking the public for help in reuniting a cub with its two siblings.

CTV Winnipeg reported on July 13 a bear was fatally shot in the Pinawa area after it tried to enter the porch of a home. The homeowner was not hurt.

The Manitoba government said two cubs were rescued after this incident, but conservation officers were still looking for a third. The pair of cubs were brought to Black Bear Rescue Manitoba, located in Stonewall, Man.

On Sunday, July 26, the rescue said in a Facebook post the third sibling, which is spotted daily, still hasn’t been caught.

“If anyone sees a small (25 – 30 pound) cub on his own wandering around, no mother in sight, please try to keep your eye on him,” the social media post said, noting the best way to catch a cub is having it up in a tree.

Judy Stearns, owner and proprietor of Black Bear Rescue Manitoba, told CTV News the reason it’s unsafe for bears to be wandering alone without their mothers is because they need protection from predators.

“Cubs can find their own food, and they automatically know how to climb, and they automatically know how to make a den,” she said.

“(The mother’s) biggest benefit is protection against predators.”

Stearns said bear cubs are social animals and bond with their mother and siblings – which can impact their mental health when they are separated.

"For the two siblings that are here – they are having a hard time settling in," she said. "It is just a real adjustment going from the wild to being in captivity, but also they are missing their mother and another sibling."

Stearns said they hope the bear cubs' mental health will improve once they find the missing sibling.

In a separate Facebook post on Sunday, the rescue said a cub from Richer, Man., is also missing its sibling, which still hasn’t been caught.

Black Bear Rescue Manitoba is a rehabilitation centre that takes care of orphaned or injured black bear cubs and then returns them to the wild.

Stearns said the rescue is currently caring for 15 bears this year, which is much higher than previous years.

"I think part of it could be, just word of mouth that Manitoba now has the facility for orphans and bear cubs," she said. "Prior to our opening, there was no place for cubs to go."

Stearns said if anyone spots a motherless bear cub, they should call the Manitoba Conservation line at 1-800-782-0076.

-with files from CTV's Charles Lefebvre.