Ducks and chickens together here as well, but we have them in separate sleeping quarters. Ducks have their house and chickens have their nice dry coop. Otherwise they are all together all the time with only an occasional skirmish over treats.....our lowest pecking order chicken, tries to be dominant over our lowest pecking order Mallard. I guess we all need someone to feel superior to.....
I have heard 12-15 weeks before you actually introduce them physically.

I have heard 12-15 weeks before you actually introduce them physically.