They are sometimes called "fly tie". They aren't really a breed, it's like asking what breed of chickens lay blue eggs, there are several breeds (and lots of mixes, hybrids, etc) that have that trait. This long hackle feather trait can apparently be bred into other breeds, it has just never been available for ornamental use, they are closely held to protect their market. The breeders regard them as utility birds with high price tags as long as the market can be controlled. I believe they have potential as ornamental birds, but it's neat just to own chickens with such rare genetic qualities.DH:
What Breed are they? I kinda remember a 'Fly tying' breed somewhere????