I have 22 chicks and 18 ducks coming the first part if March. We are in the process of building a new larger coop (I currently have 11 hens and 3 ducks) and will be building our brooder(s) next. I plan to brood the chicks and ducks separately. That being said what size brroder would I need for 22 chicks and what size for 18 ducks? Thanks in advance!