My mallard drake has recently started going into my hens coop and eating their food. Originally this wasn't a problem because he is scared of the chickens and I don't think he realized he could go in, but a few weeks ago my hen Downey had chased him in and now he walks in and out as he pleases. I have been told that layer can hurt drakes but I could be wrong. If anyone has an idea of how to stop him from doing this or if this is bad for him I'd appreciate help.