the US.Cubs usually stay with their mothers for the first two years and get booted when she breeds in the spring.A cub that loses it's mother during hunting season will usually have the instincts to den on it's own and survive.
They do? Sorry but everyone here would have a big problem with this statement. Bears first of all breed in the fall and have cubs in the den during the mid to later part of winter. The biologists move in on tagged sows to hybernating to get wieghts of all bears and tag the cubs. So that would put the cubs away from the mother during the breeding season before reaching the age of 2 years old. It is common here for bears to have 3 cubs however.