Squirrel tail Dyed green (yellow or pink also work) (A stacked bunch for the tail, butts left long as an underbody)
Wire Green or any dark color wire (UTC medium, for the counter rib)
Mylar tinsel Silver oval tinsel (Size 14, silver side out)
Marabou White marabou (One tuft for the throat)
Indian rooster saddle feathers Badger with a dark lateral stripe (Two matched feathers for the wing)
How to tie it
Lay a black thread base all the way back to the start of the bend on a size 6 2x long streamer hook.
Take green squirrel tail from the side of the tail (those hairs are longer and show the green-black-green banding), stack it well, and tie it in as a tail a little longer than the hook gap. Two medium wraps, check the length, then a tight wrap. Take a wrap or two under the tail so it does not point downward.
Do not cut the squirrel butts. Wrap them down as an even underbody all the way forward and snip them off where the head will be. Squirrel lies flat and does not flare like deer or elk.
Tie in medium wire, laying it in parallel along your side of the shank, and wind the thread back to the rear to keep the body level.
Tie in size 14 silver Mylar tinsel at the rear, silver side down so silver shows when wrapped, using minimal material to keep the body smooth. Take the thread forward in open wraps.
Wrap the tinsel forward, each turn slightly overlapping the last (the first turn may need to go completely around to hide the thread), all the way to the front, then tie off and trim.
Counter-wrap the wire rib: take one full wrap at the rear, then evenly spaced firm wraps forward to lock the tinsel down. Tie off, spin the wire off, and bury any sharp point with a few loose wraps.
Flip the fly over and tie in a tuft of white marabou as a throat: pull a fair-sized piece, break the tips off to length, snip it from the stem to avoid excess fluff, judge the length with a couple of wraps and then lock it in. Trim the fluff.
Select two badger Indian saddle feathers with a good dark lateral stripe, line up the tips, and strip the stems back to the length you want, pulling a few extra barbs off the bottom so they lie flat. Tie the wing in with two or three loose wraps, confirm it is coming off the top and in the plane of the hook, then tighten. Once these spin sideways you will never get them upright again.
Let the stems bend around the curve of the head rather than snipping them high, so you do not create a step. Build a tidy head, whip finish with three or four turns, and coat with UV resin or varnish.