Tree kangaroos are elusive and make their homes high up in the dense moss covered canopy.
You can walk right underneath one and never know it's there.
They are perfectly camouflaged.
And you cannot actually observe their behavior directly, which is, as an animal behaviorists, is very frustrating.
But we can figure out different ways.
We've used this 'Critter-cam' method of having them videotape themselves so we can look at their feeding behavior.
We use radio collars to study their home range.
So there's a variety of ways to get into the life of a tree kangaroo you