A friend made me a temporary chicken tractor - a 3'x5'x2.5' tall framed box that he covered on all sides with chicken wire. My chicks are 3 weeks old and spend part ofthe day out in my backyard in the tractor but they come indoors to sleep under a lamp still at night. I would like to fortify this tractor (a la Andy Lee's chicken tractor book) with sturdier welded wire and a tarp so that my 4 pullets can live/sleep in the tractor for thenext month or two until I get my coop built. I could get a roll of hardware cloth, borrow a staple gun, and get some more secure latches for the two doors - but I wonder if I'm laying this over chicken wire already - what size/strength welded wire would I need to use? I see Lowes sells 2"x4" welded wire, 50 feet, 3' wide for less than $30 - would such wide holes be okay if there is already 1" chicken wire already underneath it? Also, I assume I should add a roost but I'm not sure exactly how to go about doing that - there are no side boards to nail a roost to. Can I build a free-standing roost? Or stick part of a ladder on a slant in the tractor?