Sand Hill Cranes showed up at the lake we go to in Michigan about 10 years ago. Last year one started spending a lot of time at one of the neighbors 5-6 houses away. While taking pictures of him through our 35mm camera and 300mm lense, I discovered he was missing the lower part of his/her leg and foot. We gave him the nickname of "Peg Leg." He hung around until December and then apparently left.
We wondered if he had somehow survived the winter and or migration. While sitting at a campfire sometime in April this year just as it was getting dark, Peg Leg flew within 20 feet of us. So he had survived the winter/migration and had a companion now. They flew back to the house from the year before and landed.
A missing foot doesn't seem to affect him much other than maybe slowing his ability to walk a little. We didn't see any offspring this year so maybe next year.
The neighbor leaves out some kind of food for them and we have seen them hand feed both of the cranes. This hasn't seemed to tame them any as they both still disappear for a day or two and still peck around for bugs and things.
I took a short video of them in our yard last weekend. Peg leg is the closest one.https://www.youtube.com/watch?v=rveGJpiBmsM&feature=youtu.be&app=desktop