This is Bracket. She's a bantam hen just over a year old. Four nights ago she didn't return to her coop. I thought it likely she had a nest and was sitting. It took me two night to find her and her nest. When I found her she was sitting roughly in the position you can see in the photograph. I confiscated her eggs and destroyed her nest. The next morning she returned to the nest but then rejoined the rest of her tribe for the day. During the day she free ranges with her tribe and apart from some minor difficulty climbing steps during the first hour or so after being let out in the morning her behavior is normal for a broody hen. She will still ruffle up when approached but has been doing it less today and still clucks a bit. She eats and drinks and from what I've seen forages normally. The problem is at roost time she goes into the coop and then tries to adopt the position you see in the photograph. On a hard surface her legs slid and she rolls over. It looks like she is having a fit. Last night and tonight I have brought her in to the house and confined her to the pet carrier because I'm concerned she may injure herself in the coop. During the day she is out and about with her tribe. Has anyone seen this posture before and does anyone have any ideas on what the problem could be and how to sort it out?