Turkey wing is the best I've found. I have tied lots of muddlers just because they work so well. I do the same as Scott with the fixative. I try to have them looking okay out of the vise but don't worry about it much any more. I believe you will find the original pattern was quite beat up looking to begin with. (Somewhere on FAOL I saw a picture). The more ragged they get the better they work (sometimes). I find the light barred wing feathers make for a good shiner minnow imitation. (JMTC)