Hello! I don't own birds yet, but plan to in a few years(ranging between 3-10 years, really depends on a lot of things in my life). I plan to keep them in a modified triple critter nation cage. I was wondering though, would it be okay to keep mixed species together? I want a conure, a parrotlet, and a cockatiel. I couldn't settle on one species. If they can't be housed together I'm willing to roll some dice to pick just one species to keep.