.....I have heard the same about turkeys....
....but only from arm-chair biologists. I have not looked into the literature to see what it says, but the public is always quick to condemn by correlation. Turkeys have the reputation of avian wolves I suppose. Anyway, there are lots of both around my place.
I am surprised the turkeys are as far north as you. But I guess climate change is doing its thing. I thought they stopped at Duluth, here in the east, but now I have seen a few just north of Duluth and have heard they are pretty common at least a little ways north of Duluth. I suppose wild pigs will be next....
About as armchair, as armchair gets. Dissertation time.