Up to four bears at a time try to get in on the prickly goodness of this foliage-bare tree in Kananaskis Country, Alta.

This week's video, aptly titled “What goes on when you are not there,” is an assembly of images captured from a remote wildlife camera. This gathering place, sometimes called a "communications" or "rub" tree, is a forest spot where many bears and other species use scent to communicate with each other.

While this "hidden camera" started as a parks officer's side-project, the footage is now part of a collaborative study through Alberta Parks which investigates how several species share and use habitat in this mountainous landscape.