I would suggest a smaller pen separate and away from this area, as mentioned, chickens and especially waterfowl, shouldnt be kept together. I know, I know...everybody does it, but it is asking for trouble with the upland birds, they cant tolerate what chickens and waterfowl deal with every day....Then again, you maybe one of the lucky ones and never have trouble, I sure havent been that fortunate! Every time I have tried it, it's ended in a very sickening, and EXPENSIVE way....