My BO hen has been setting for 10 days -- I've been so proud of her -- and tonight when i went to shut the henhouse door, she was like face down backwards, halfway out of her nest box, it was so weird looking. I dragged her away, kicking and pecking, only to discover a RIR had stolen her egg nest and was sitting, crammed in the back, on a BIG pile of eggs (while BO hen must have been gone for just a minute). I dragged out RIR hen, put BO hen back and boy did she climb back in the nest, all huffy and puffy, and spread her big fluffy self all over the nest again. I swear she was counting those eggs one by one and looking madder than heck!