I have a chicken tonight who did not return to her coop. I found her under a tree and it was raining. She has never liked being handled but let me collect her up and i put her in a coop on her own. When i put her in she lay there on her side and didn't move. I think she is around 2 or 3 years old. It has been quite cold here in Scotland UK, but the others in the flock seem fine even the moulting one. Any ideas what it could be? What do i do with if i go out in the morning and she hasn't made it. What do you do with a dead chicken?