I moved my 2 week old RIRs to the new minitractor inside the garage. Went from a heat lamp to a 75W light in one corner. They love it! Plenty of room ( 3'x3' run ). I put 2 inches of pine mulch in there and they were scratching up a storm. I also placed a 2x2 pine roost for them. I went out a little ago and 2 of them were on the roost. The cats sure want to get in that tractor. I already swatted one with a rolled up newspaper for trying to stick his paw through the wire. I think my little beagle mix is going to " protect " them. I placed her bed beside the minitractor.