Chicken run dimensions

I've no experience with pheasants, but that would be plenty for at least 6 chickens. Nice big run

 

We only have 3 Plymouth Rock hens and we made the run 8foot wide by 14 foot long and is 6 feet high. (My bf built it and since he was worried most about the chickens annoying our neighbors I told him the more room the better) happy chickens r quiet chickens haha but I think that is a good size

 

Yes, it's big enough.