I have a 7 month old roo who is too randy to be in my smallish coop/pen with the three ladies. I want to build a tractor or something similar for him that we can keep in the larger run we have. Any and all suggestions are appreciated. He currently is in a wire dog kennel that I can move to the garage at night (he also crows a lot) to protect him from predators (raccoons and opposums) and out to the patio during the day. I also let him out into the run at times so he can bathe and scratch around and hang out with the one girl who likes him.