I know if I purchase adult birds I should quarantine them and make sure they are free of disease before I integrate them with my flock. In April, I am planning my first hatch of chicks from my existing flock. I am also picking up a few chicks at a feed store around the hatch date, and there is a possibility I may be getting a few chicks from a breeder within that same week. I planned to put all these chicks together in the brooder. Is it okay to mix all these chicks from different sources?