Hello chickens, I am building a pen for my peacock, and most sites i consulted reccomend 2 x 4 wire on the inside and 1 x 1 hex wire on the outside layer. Why? It will more then double the cost. I wonder if I get 1 x 1 wire for the whole thing, should be sufficient. We have all sorts of predators, I just need to know whether double later of wire is necessary. Thank you.