I have to be careful because I have different sizes and my zon isn't too happy with the others at all. I let them out in shifts. My conure and tiel and then my grey and zon. I watch over them closely and if I cant keep an eye on them, I put all but the zon in their cages. So far, this is the only way that I have figured it out. I've actually only had Caesar, my zon, since December, the tiel since October, the conure since February and the grey since April so its all still new as far as them getting along. I hope it gets easier someday. I definitely feel as though someone loses out but I try to make sure that they all have the same amount of time out. I'm still working on ideas of ways so they are all out at the same time but I jsut got a few ideas from you, Lisa so thanks!
Where in Colorado are you, MiniMama? Nice to see another Coloradan on here!