They free range just fine and are able to survive Michigan winters in the U.P. even as the story of two such birds is still unfolding as we speak,
One of the two renegades took over my home on a river with large acreage. He free ranges in the summers, sleeps in the pine trees at night or on my chimney, or unless server storms he literally runs into the garage for safety, but come Sept 1st, I bring him in the garage for the winter and give him a light and a perch with straw, heated water bucket and plenty of sport mix high 33% protein dog food he loves it,but I'm not sure if that's too high a protein mix? , corn, sunflower seeds and collard greens daily with some grit and he seems very happy, loves cheetoes and hot dog buns or bread, cantaloupe,apples mainly from my collected pile for deer season I keep in the garage and has even seemed to have been drunk on some fermented ones even, and then also unfortunately for me my strawberries and 6 or 8 broccoli plants last yrs he got before I got my fence up.
The other bird is still running free in the U.P. since it escaped and adopted a flock of turkeys and learned from them where the food is and has now spent its second winter with flock as repeatedly being reported by observers in the area, one woman tried to catch him a couple times but failed, lol, she don't know a little secret I learned about peacocks or she would have caught him easily.