I would like to start raising roosters for tying flies. I have lots of information from other threads about feather quality, but how does one create these feathers? I read that Grizzlies were originally from Barred Rocks crossed with Blue Andalusions and Old English Game. How are the chickens bred to get longer and longer saddles? And what about getting them free of webbing? Is that a special trait or do they have to reach a certain age before the feathers lose webbing? Also, how do breeders get them to skip years between moulting?