I have three Khaki Campbell ducks (two drakes and one duck) that aren't quite through their second molt. I'm trying to integrate them into my mixed flock, but every time I do, my two Pekin drakes chase after them, pin them to the ground, and badger them to exhaustion. I have to remove them to keep them from being harmed. Will I have to wait until the female reaches maturity before they will accept her? Right now they are separated, but can see each other and the two Pekin drakes are constantly rushing the fence if they get too close. I would think that they would at least accept the female, but they attack her as well. I have five female Muscovy ducks and one female Pekin and they accept the new ducks without any trouble.