Nice to have Hunter friends !! in The Fly Tying Bench Posted December 13, 2018 · Report reply Here's a question related to this thread, A few years back I was given a bunch of tying materials including dozen or so small bags of various wood and mallard duck feathers which were sorted. The guy that gave them to me had intended to learn to tie flies but never got past acquiring some materials. He said a hunter he knew had shot the ducks back in the 80's. Whoever shot them packed the feathers in bags with a white colored fine powder apparently to preserve them. 30+ years later and they are still perfect for tying. Cocaine jokes aside does anyone out there have any idea what this powder might be? I was thinking it might be a type of desiccant but the contemporary stuff I'm seeing on line doesn't look white.