I have 2 pekins, 1 male and 1 female about 9 weeks old.Im considering getting 2 cayugas to add to the mix.i have a few concerns.The cayugas are still ducklings around 10 days old I imagine that if i get them ill have to keep them seperated from the pekins because of their size.Im also concerned that i may end up getting 2 male cayugas. So my questions are the pekins will be aggressive toward the 2 smaller ducklings correct? Also should i be concerned for the future that if i end up with 2 males that my female pekin will get beat up during mating season?