Quote:
I think that in your situation you would VERY STRONGLY be best off with a fixed coop (you can always *add* a day-tractor moveable pen for summertime use if you want).
Reasons:
1) the only kind of tractor you can build for 6-8 hens will be pretty cramped for them, thus not so nice for them AND much more difficult to manage your air quality in wintertime than would be for a fixed-position permanent coop.
2) your tractor will BECOME a fixed coop for at least 4 months per year ANYhow (quite likely longer, if you have early fall snow dumps and/or muddy springtime conditions).
3) it is a lot easier to seriously predatorproof a fixed coop than a tractor.
4) yes, tractors do leave a trail of "chickened" rectangles across your yard. How bad they are depends on how often you move the tractor and what your turf/soil/climate are like; but I can tell you that my original 4x7-footprint tractor with 3 hens, when moved
daily, would leave about a week and a half's worth of pretty obvious thrashed area behind it, before the grass grew back.
5) yes, it will leave a trail of poo all over your yard too, and in many conditions the poo can persist for weeks.
There are certainly some good things about tractors, but *for your situation* I think that you would be really much more satisfied with a permanent coop, perhaps with a lightly-built 'day tractor' to get them out on some grass sometimes if you want. You can also bring the grass to THEM -- safe garden weedings and kitchen scraps can keep chickens quite well entertained if you put them in the run
Good luck, have fun,
Pat