That's mainly from Genetic Hackle Fowl, specially bred for the purpose. Sadly most chicken feathers are not useful for it.
Some roosters grow a few feathers that can be used for the most simple, basic ties. But it's hard to get the feathers into the hands of actual fly fishers because they want the really impressive feathers grown by the industry bloodlines (cruelly, I might add, and they cull tons of female chicks to protect their "propriety" genetics).
I kept a line of Genetic Hackles (my roo flock) and while I did find a few people that super duper wanted them, they were a limited pool and I couldn't keep hatching them out. So now I'm working on blending them into my project to make the end bird a little more useful (not the high level Hackles, of course).
Custard first, and an unnamed roo, they found appreciative homes!
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