:? I was wondering if anyone can help me with the size it needs to be whether a ground floor or wire is better for them. It seems like ground floor would be more natural for the birds. I would not be carrying birds over from year to year just need a place to keep about 500 or so for a local preserve. Does the whole thing need to be open to the weather or do parts of it need to be covered. If anyone has any pictures they would be greatly appreciated. I just hooked up with a preserve and they want about 1500 birds this season and I need to expand, I already have a 20' x 30' pin but it has a tin roof more like a coup with wire sides and would like to build a flight pen so I can accomadate their needs. Any help would be appreciated