hohohoooo boy, I have done some weird things with my chickens. Once, when I had a severely injured hen in the house after an owl attack, she decided that sleeping on a towel at the foot of the bed would not cut it. Nope, Ms. Little decided that from then on, she was going to sleep under the covers (it was early December after all!) She was remarkably good about it; never pooped under the covers. She always knew to wait until morning when I pulled her out from next to my feet and put her on the ground. It was always fun to watch her first stand on the quilt, then scout for an opening, then burrow her head under the quilt and then keep going until she was nestled beside my legs or feet. At first I was scared I would squish or injure her, or that she might not get enough air, but I never hurt her and she never seemed oxygen deprived.
As crazy as it sounds, I really miss her and her crazy bedtime shenanigans.