Hi. I'm in central maine, doing homework for spring project: 4 x 8 tractor, 2 storey with windowed coop on top, full run under, with plan for an other 4 x 8 run to attach as needed or use free standing over 4 x 8 garden beds. I'm going to insulate top, will close in bottom during the winter and attach a hoop style green house run during the winter. (that's an other experiment that i'm working on this winter. Any of you out there have experience with chickens/tractors in zone 4? I plan to start 6 chicks in spring, looking at Dominiques, Ameraucanas, Australorpes. Any one local to me have these breeds, with possibly eggs or chicks available in spring??