Here's mine. 8 sections of 3/4" pvc pipe (cut to be about 5'8" tall).
4 10' pressure treated 2x4's.
1 12' PT 2x4 cut into 4' sections for gate frame.
3 rolls (I think) of 1x2" welded wire.
3 hinges and 2 spring loaded gate latches.
2x2 used for gate and supports (don't remember how many).
1 10' section of crown mold screwed to the underside of the hoop arches for stability (found in garage-free)
First pic is freestanding in my yard, second is attached to coop after I built it. Tarp over top.
I used galvanized screws and 90 degree angle bars for joining the 2x4's, but there are other ways to do it.
The strip of white pvc pipe in the doorway is there to close up a gap that was a little wider than I thought was safe, because my door frame or my gate wasn't quite square. I just drilled a hole into the pvc and then screwed it to the frame to close the gap. I have the latches at the top and bottom of the gate for security. I extended the wire out about 18" on all sides and stake them down with tent stakes for digging critters.