When I went out to feed the birds this a.m., I saw just 2 Dominique roos in the bachelor pen (when there should be 3) and figured one of them who always hops out was out again. But he wasn't anywhere around so I looked into their house to check and he as lying inside the doorway... thought I he was dead. I picked him up and he opened his eyes, but couldn't move. His head is twisted around over his back and he won't use his legs... although he has feeling in them and can move them slightly and even can put weight on them if I support him. His head just stays twisted over his back or hangs down limp. I'm thinking either he had a reaction to the Ivomec (injectible cattle wormer... gave each bird 3-6 drops on a piece of bread depending on size yesterday - everyone else is fine, including the greedy goose who double dosed himself when he stole a second piece right out of my hand when I wasn't looking), or he injured his head or neck trying to attempt another escape. I brought him inside and put him in a box so I can give him water and watch him. He was perfectly fine and healthy the night before, so it's definitely not Mareks or anything like that. He's inside in a box resting right now, and I've been giving him water with electrolytes with a dropper and some pieces of soaked bread (which I have to put in his mouth for him to swallow). Anyone have any ideas of what it may be and treatments? Thanks.