Here's my hot weather coop/run for our five bantams:
And here's their chicken tractor:
I used an old trampoline frame, painted it, covered it with 1/2 by 1/2 inch vinyl coated hardware cloth, and then wrapped the side with willow fencing. I put the chickens in their stationary coop/run at night (and anytime it's raining), but put them in this tractor in the daytime so I can move them around to fresh grass.

And here's their chicken tractor:

I used an old trampoline frame, painted it, covered it with 1/2 by 1/2 inch vinyl coated hardware cloth, and then wrapped the side with willow fencing. I put the chickens in their stationary coop/run at night (and anytime it's raining), but put them in this tractor in the daytime so I can move them around to fresh grass.