I think Gimpy is just doing this to pull at the old heart strings. When she was little enough, she'd get around by just using her wings to help propell her to where she wanted to go. Then she got fat and could no longer lift herself with her wings. So, she went into a cage inside the tractor to protect her from the other chickens who would just walk on top of her and steal her food. I've been making sure she's got food and water within easy reach. Well, today I went out to move the tractor and I lifted Gimpy's cage out of the tractor so I could move it. When I put it back in, she got up on her legs and walked a little bit. She's done it several times today. So, she's getting around pretty well and getting much stronger. The sad thing is, she's suffered and finally is starting to walk, only to get processed in about 2 weeks. I think she's pulling a Wilbur the pig on me.