I'm moving the cornish X out to the coop where I am building a larger brooder for them. Will I have to put a wire cover on it? The brooder will be 24" high. They are getting so chubby now that I doubt they could fly very high, but I want to be sure. I don't want to just turn them loose in the coop because it's way to big and not worth the effort to clean that size of space for 9 birds. Thanks folks.