One week ago one of our speckled Sussex was limping so I separated her in a cage. She is getting.g worse now today I come home to find we have a second bird a comet who won't put any pressure on her foot. These birds are about 5 months old and free ranged with about 25 other chickens and 4 Turkey's about their size and 1 big turkey. Do I put them in a sling or what? How do I help them recover?