I have two questions about breeding. 1. One of our roosters, Percy, keeps breeding with this one hen, Shelly, about 12 times that I've seen. Her neck feathers are almost gone now. How do I stop him? 2. One of our Australorp hens keeps wanting to sit on eggs. It has happened 4 times this year, and I cant break her from it once she gets going. I don't know she's gone to try and hatch until the day after. She pecks me when I try to get her off the eggs. 3 of the times the eggs weren't even fertile, and the 4th time she was sitting on a golf ball. How do I stop her?