Entoman on Sep 22, 2012September 22nd, 2012, 10:19 pm EDT
Yes indeed! Marabou (streamers, emergers, etc.) and neck feathers or "T-base" come to mind (for wing posts on parachute patterns). Some of the body feathers or "flats" are also good, and the leading edges of their flight feathers have long quills that can be dyed to use for quill bodies and stonefly tails. They are much better than goose in terms of toughness and length. In their natural white state they are great for Prince Nymph wings. Lots of useful feathers!
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman