Thats kinda the deal here...maybe in broadleaf forest where there's a lot of nuts with high fat/high protein content that's better for them. But where that isn't going to happen, lots and lots of berries do Yogi pretty well too. Takes a ton, but he can get them.
Poplar might live pretty long under optimal conditions but rare is the trembling aspen that sees 80 here, dodging stuff like phellinus tremuloides all the way. The saw toothed versions can get pretty old and nice tho! Tougher eh?
Butternut trees are protected now in Ontario, beech bark disease is wiping out huge tracts of beech trees, don’t worry oak wilt will makes way across the boarder eventually (all mast heavy trees that provide food) The university of Guelph has some good programs and initiatives.