Chipmonks and squirrels have declined in S. Maine.
I live in S. Maine in the summer and have noticed a decline in squirrel population and have yet to see a chipmonk! First year I have actually had blueberries on my low bushes. What has happened to our little creatures?
My friend thinks the deer ticks have killed them. They are killing the young moose.
Could this be possible. Mice Population also down.
Oxford County Maine wildlife
I really have not heard anything about this decline (they are doing fine in MA where I live). You should contact your state's department of Wildlife and Fisheries and ask them. Here is there website: https://www.maine.gov/ifw/fish-wildlife/wildlife/index.html