I have a problem. I am new to chickens and I have 16 who are 6 weeks old. All are healthy except 1 Dominique. She drags one leg and scoots around with the help of the other. The leg seems deformed but she makes it around OK. She needs help to get up the ramp to the coop. Should I put her down? She is so sweet. If so. What is the humane way to do it? Thanks.