I have a cornish cross hen that got really broody about a week ago. I gave her a handfull of golfballs in the nesting box and she sat right on them within half and hour. The problem is she sits all day and won't budge then at night hops up on the roost poles with the other three chickens. I assume she stays there until morning or some time during the night then gets down. I know for sure she is on the roost (off the eggs) from dust until about ten o'clock. Short of taking out the roosts and depriving the other chicken of them what can I do? Why won't she stay on the eggs/golf balls.