I got alot of eggs from my barred rock pair lastyear and this year all my other pairs are laying real well except for them. I noticed back whe it was real cold a month ago there was a broke egg in the pen with the barreds that had been half way eaten.. I thought well its froze and busted. I went out just a few mins ago and seen one of the barred hens in the bucket that they lay in, I seen 2 eggs in there with her so I open the pen up and go to get them... well she's eating one of them.. so Imdediatley I grabbed her and she's in with my juv chickens now that arent laying yet. She didn't do this last year, what would be making her do it know? and once they start do they continue to do it, and is there any way to break them???