Which gamebirds tend to go broody? Any? Is it an individual hen thing? Do you need to leave their eggs in there for it to happen? I know that my pheasants were not impressed when I left a plastic egg in place of the ones I removed. Within 5 minutes of my leaving it there, the silver roo had rolled it out of her nest and to the front of their cage. I thought it was quite comical. He did the same thing with the golf ball I put in there.