This is my version of a Calibaetis Sparkle Dun.
I used what I believe to be bonafide "Turkey Rounds" for the abdomen as I first saw used in a fly tied by Walter Wiese of Parks Fly Shop in Gardiner, MT.
There has been confusion (mostly on my part) about what he references as "Turkey Rounds".
I believe this confusion stems from the fact that so many of us use "Turkey BIOT Quill" feathers for bodies on flies.
The "Turkey Rounds" are the lesser feathers. I have a photo of the turkey quill feather I used as the abdomen on this fly and believe it represents the "real" turkey rounds Walter uses.
Please correct me if I am in error.