Our 5 grizzly cubs are doing well and are very active. In our rewilding program for grizzlies we don't hibernate the cubs and they keep growing throughout the winter. To avoid habituation to humans we release our cubs at 17 month while they typically leave their mother at 29 month. Growing over the winter gives our yearlings the size of 2 year old's and gives them the best survival chances.
All released bears are fitted with a radio collar to monitor their first year and so far we have no evidence that the early release age lessens their survival chances.
