Wisconsin is known as the Badger state and I believe their state university is known as the badgers in football? Anyway, they do live in temperate climates in many northern states and in Canada. None in Tennessee where I am that I know of. Coons worst hereabouts for killing chooks, and followed by coyotes which have multiplied unbelievably. Snakes and weasels hardest to keep out. I built a coop that none of those can get into, and consider it worth the time and money.
Having a coop riddled with holes that preds can get into is just a recipe for a disaster. They will eventually find that there are easy pickins to be had there and will repeat their visits. If it is worth building, it is worth building right. If chooks are worth having and raising, then that too is worth doing right. Your time is valuable, and who needs the grief? Man here in next county lost 32 hens to coyotes because he thought his barn was good enough for them. He now has to start all over again raising a new flock.