I have 3 Rouen ducks. One male 2 females. I got them last week of March. He tries "popping" them like you would expect. My question are..... When will they start laying eggs? How long is the incubation period for ducks, when should I expect them to possibly start sitting on eggs if they will, can I have a broody hen sit on them if they won't sit, and will they lay eggs in the brooder boxes or will they lay eggs out in the yard somewhere? Thanks