This video was posted not too long ago by the police in Wells. And the Maine wildlife and Fisheries will tell you to expect them to be active until about November 1st.

MDIFW goes on to supply advice if you'd rather not have them in you yard. They also tell you if you do see them the most important thing is to give them their space and privacy. They are attempting to bulk up for a long winters nap.

And since they assure us that we have the most bears  of any place in the lower 48 it is wise to be smart and live and let live.