We recently raised 5 chickens and 1 duck in a brooder together. We just moved them to a pen and coop. We know our duck is attached to the chickens. Last night we put the chickens in the coop. Duck chirped in distress and the chickens all huddled by the coop window chirping back. We opened the coop door and the chickens flocked to the duck. Will we be able to separate them at night ever? We do have two other ducklings raised separately.