I don't have ducks yet but hopefully soon. I'm thinking about getting some ducks from my sil. She has two ducks and one drake. One duck and the drake are Cayuga and the other duck is a Pekin. I was wondering about breeding/inbreeding. Would it be okay to get two Cayuga (male and female) or would it be better to get one Cayuga and one Cayuga/Pekin mix (male and female)? Or just two females? I want to avoid any problems that might happen with ducklings and deformity.