We have 5 female ducks - 2 that are 2.5 years old and 3 that are 9 months old. We'd like to add a few chickens. I think I'd prefer adult or at least older chicks. Ideally, we house them together at night as the duck house was built with the idea of a few chickens in mind. But we also have a separate duck house (dog house kit from Lowe's) that we can use if necessary. Still in planning stages - figuring out what breed(s) we want to add. It took a while to get the new ducklings mixed with the 2 older ducks - long slow process. What should we do to introduce and mix chickens with the ducks - best to do them all at once or what happens if we find a chicken at a time?