Should I buy this rooster? He's originally from a feed store and the guy says he's an Americauna. He doesn't look like it to me. Is he an easter egger? Does the feed store misname their chickens? Also, the guy says he is approx. 20 weeks , heavy boned, and almost twice the weight of his sisters. Is this a good thing in a rooster? I've never had a rooster before and need help from the experts out there! Would a heavy rooster hurt my hens with the weight?