I believe that they need a lot of trees to sustain a very big colony. I don't think there's enough wooded area here to feed very many of them for very long. I'm guessing they will choose to move along, but wonder how much damage they will do before they leave. Because of all the flooding that we had all summer long many of the trees along the riverbank we're struggling anyway, so between the flooding and the Beavers I think the landscape will change.