Actually, hanging a dressed bird in the right conditions makes perfect sense. Here at home I often leave the birds out at least overnight before cleaning them. You pay good money for aged steak. Why not a bird? The poultry you buy in store has hanged in a meat locker for some period, too.
To be tender and flavorful meat needs to at least go through rigormortis. Aging helps. This fall a brother shot a big buck, but didn't need the meat and offered it to me. It hung for over a week in the shade at his place, temps in the 30's. I had it another several days before butchering. This is some of the best venison I've ever had. I grilled steaks a couple days ago and it was friggin awesome!
Compare that to some deer we butchered without hanging years ago that was gamy and tough.