The three cubs were startled by an unfamiliar noise. Curator Coy was in a different spot from what they were used to, and the noise startled them. Using the typical strategy of cubs in reaction to an unfamiliar sound, the cubs scurried up a tree.
The structure by the fake crow is the observation tower, which is where the curators usually go to observe the cubs. This time Coy was at the far side of the enclosure, which is why the cubs heard a noise from a different place.
Deciding that there was no threat after all, the cubs descended quickly to go back to eating.
The acorns are stored in our dry storage building. This is a bounty of acorns for the cubs and we are grateful to the East TN State Nursery for thinking of our little bears! The cubs will be well fed, indeed.