Buff Orp Hens are acting strange. They were in the nest boxes at 8 am when I went to let them outside and STILL in them at 2 in the afternoon. The other hens were getting mighty annoyed. They both went out to free-range in the afternoon but when I went back in around 6 one buff orp was in there again. Other was not. If you mess with her she hisses and puffs up to 3x her normal size. When I went to put them to bed she was still in there so I took her out. First I put her on the roost and she acted like she was going to fall off ALL fluffed up. I finally put her on the floor to see if she would move around and she just SAT there. Wouldn't move. Puffed up like crazy. It was like petting a super fluffy long haired cat. After about 5 minutes she went and ate some crumbles. Still puffy but recognizable as a chicken and not a pillow with a head. She did go up to the roost but I don't know if she stayed there. Is this classic broody behavior? Isn't she too young? 25 WEEKS only. Why did she just sit on the floor and not move? Could she have something else wrong that makes her do this? She seems puffed up mad and not puffed up sick if you know what I mean.