I use white CDC for my wings, mostly on small midge patterns. I strip the barbules off the feather and tie them in the same way I would the deer hair for the CDC and Elk. Trim the front segment to a "head" and then trim the back even with the bend of the hook. This floats flies up to a size 18 without a problem. Like any other CDC pattern, I have to dunk it in something like Frog's Fanny, after a couple of fish.