Felled trees. Gnawed tree stumps. Leftover wood chips. These are all signs that you’ve probably got a colony of busy beavers on your hand, particularly if you live near water. And while these animals ...

Too many busy beavers can cause headaches. Donald Kolbert, a Stewartville outdoorsman who's watched beavers since he was a child, has studied beaver activities on a Mower County stream for four years.