I am in need of a new grow out cage and I don't want to spend money on one. So, Im trying to use items I have on hand. I was thinking of using 2" hex wire for the walls, door and top, hardware cloth for the bottom and 2x4's for the frame. I don't have enough hardware cloth to do the entire cage. The cage will be located inside my existing preditor-proof hen house. I'm just not sure if the 2" hex wire will keep the 4wk old standard chicks in or if they will be able to get out.