Feathercraft does or did sell them. I just looked in the Hareline catalog and they're still available wholesale.

The overall effect is much more like a pheasant tail fiber in that they are basically fuzzy "in general," versus a biot that has only one fuzzy edge.

Byron: I figure it's a biot if it comes off a primary feather. "True" biots are more tapered, but the barbs from the other side of the feather wrap the same way.