I have a old english game bantam hen and im pretty sure shes gone broody because when i let my flock out im always missing a hen,and when i go looking for her, shes always laying on eggs in her nesting box and gets quite mad when i try to get them from her. Im also 100% sure the eggs are fertile. So today i decided i would leave the eggs and mark them to see if they would hatch. My dad says they wont hatch under a hen because its so late in the year, but i wanted to be for sure.. So.. Will they hatch?