I was watching a chicken today. She is a blue maran and she shares a coop/pen with FBCM's. Today she was at the fence what a concrete block was sitting. Behind it were pine needles that had fallen. She was picking them up and putting them on her back. I've never seen a hen doing anything like that before. Anyone have a clue to why she was doing this? She isn't broody. The stuff would fall off her back and she would just keep finding more and putting it on her back. It never stayed in place. Curious to know if anyone else has ever seen this and if so what was the reason.