Our 'scovies don't really care that their flockmates are 'different.' We've got a pretty peaceful group at the moment.
The only real noise we get is twice a day, when the ducks hear me leaving the house to go feed them. The Anconas-plus-Seelie quack it up during my walk out to their pen. I toss their peas around the pen and they attack them with gusto. The Muscovies stay under my feet while I go pour grain into the trough and then the Muscovies dive into that. (It's the Muscovies we raise for meat, but I swear, if we ever do eat the Anconas-plus-Seelie, they will be THE healthiest meat, preferring the greens over the grains *chuckle*)