These are burned hackles , dyed. These are traditional burned hackle stems long favored by Catskill Tyers for tying quill body flies like the Red Quill and Quill Gordon. Used by tyers like Dave Brandt and many other Catskill Tyers. These can also be used for making Euro style nymphs. These make a great substitute for the hard to locate Polish Quills and also burned peacock. Often tyers soak these in water before tying to make them easier to tie and avoid splits or cracks.