i have 3 1/2 chickens that are a year old. and i will be getting 1 pekin duck. i will be putting the duck in with the chickens in the same coop/run. the coop is 5'6"W x 5'9"L x 5'H. the run is 5'6"W x 19'L. will the chickens have issues with the duck being housed with them? or should i wait till spring when we get new chickens before we get a duck and let them grow up together.