I don't know on the free-ranging and show condition - but I suspect feather damage is too easy when out and about, and sun bleaching is also not good... You will probably also want to make sure he gets high protein/high oil content to bring make his feathers glossy and strong. You can also "cage train" him so he will show to advantage when in the cages at the show. Keep him in a cage like the ones at the show, feed him an water him and give him treats every time you pass by - that way he will look alert when anybody passes his cage.. like the judge.... Also handle him, take him out and put him back in. Have somebody else do it too. A bird that panics and attacks the judge does not make good points... All of this was gleaned from the Silkie Show thread, I do not show my birds... yet....Is it possible to get a cockerel into show condition while still allowing him to free range? He's a blue, so is suspect sun bleaching would rule that out. I'm in Texas and am aiming for shows after October.
I've just started free ranging them. My pit bull-type dog has been really good with them. The mini Dachshunds, after a killing spree while in the care of my son while I was on vacation, are leaving them alone. Maybe it has something to do with the fact that the cockerels are so much bigger than the little Dachshunds now. (Dachshunds are not outside without supervision when the chickens are out.) I've been letting my parrots out to fly while I take care of the chickens in the morning. The macaws are excellent at alerting to avian predators. Between the macaws and the big dog, the chickens are probably reasonably safe outside. The macaws have been quite interested in the chickens. I had been hoping to be able to house the chickens in the aviaries so they could clean up the very expensive organic parrot food that the parrots throw on the ground. The other day, the big scarlet macaw went to ground near the chickens. Two of the cockerels (4.5 months old) fluffed up their hackles and flew at the bird. It was pretty funny. Not sure how safe any of the birds will be if housed together.
The only concern I would have in housing them together is are there any shared diseases that from one could kill the other? Can Macaws carry something that could hurt the chickens? Or vise-versa?