I have five adult ducks, three one month old ducklings, three adult chickens and three 2 month old chicks. They all live/get along together just fine. Some of them were raised together, others were added later. I think if given enough space such as free ranging, they'll do o.k. Occasionally one of my drakes will try and mate with a chicken but not too often. Most of them all seem to go their seperate ways, especially when they are out in the yard. Good luck with yours!!!