I recently got some ducks from a friend of mine, and she got her batch of 20 ducks about 20 years ago, originally they were campbells and rouens and they have been breeding/hatching since then. These are decendents of here original ducks. Is it time I buy a few ducks from the hatchery to deepen the gene pool? I have three males and two females I thought I would keep one of the males and the two females, and order a cambell male and two blue swedish hens. What do yall think?