I have a guinea hen (or rooster, its so hard to tell), that has a severe swollen toe and is missing two toenails. I noticed a couple weeks ago that its foot look larger, but it was happy and flying/foraging, and I didn't think much of it. Yesterday I noticed a limp, and it had trouble getting into the coop. It was also about 10 degrees outside so I thought that might be part of it. I picked it up and locked it up for the night with the other chickens/guineas. This morning I went out to let them out and noticed it couldn't even get up, and it had been laying in its own mess all night. It literally can't get up and doesn't appear to be eating or drinking. I noticed one of the other guineas pecked at it this morning too. I will now seperate it from the rest so they don't pick on it. I have read on here that its possible to ambutate the foot, but I can't do that myself. Should I call a vet, or at this point is it too far gone to save? Should I put it down so it doesn't suffer?