I have a chicken who has decided nothing can be in a nest box. She spends hours daily kicking scratching out what ever we put in the box. She does this to the point that eggs are now getting broken in the nest box. (3 out of 6 eggs were broken yesterday) She has always been a bit of a problem in this area, but she has become obsesive now and it is turning into a problem. We are thinking that long term we may have to either cull her or pull the nest boxes and do a redesign. I am looking for a short term solution as it is still cold and winter in Montana and we are not going to "redo" the next boxes in the short term.