I don't have a good photo of the actual tractor my turkeys are in but it's the same design as this one:
The basic difference between the chicken and turkey tractors is the turkey model has roosts with the bars further apart and the nest box is larger. It's a community type box, one big open box big enough for them to get in, not so big the tom can easily get in with them to annoy them.
At present I have six Midget White hens and one tom in it. It's complete in itself in that it has two tube feeders, a hanging waterer, roosts, and nest box.
I move it every day using a hand truck to lift the front then pulling it. If I were to build it again I'd drill axle holes through the 4x4s and put in wheels.
It's the apron wire you see at the bottom that makes it work. So long as the wire is intact I've never had a predator get in over the four years I've been using this design.
The hoops are two 16ft cattle panels. The sledge runners are two 10 foot 4x4s and the front and back cross members are two 10 foot 2x4s.
This is how I attach the 1x4 framing boards to the cattle panels:
That one wasn't one of my neatest jobs, but you see how it works. The wire is 14 gauge electric fence wire.
If you need more info I'll be back online next Tuesday.