Bead Gold, brass or tungsten (2.4 mm tungsten in the video)
Thread Rusty brown
Underbody Yellow Antron
Rib Copper wire, small
Tail / overbody Brown goose biots
Thorax Tan fuzzy dubbing (video uses a rabbit and squirrel mix)
Hackle Brown soft hackle (brown hen in the video)
How to tie it
Put the bead on a size 14 hook, start rusty brown thread and take it back to the bend, then forward to the front.
Catch in yellow Antron at the front and take a few loose wraps back as far as the body will extend, then bring the thread forward.
Catch in a small copper wire rib at the front; its job is to hold the biots in place.
Wrap the Antron back and forward to form the underbody, spinning it to cord it up or letting it flatten, without making it too fat; tie off and snip.
At the front, tie in a couple of brown goose biots on the top half of the body with the tips flaring slightly to the sides, extending past the bend as the tail.
Use a bodkin to separate the two tail tips a little, then pinch the biots down and secure them with the wire rib; tie the wire off at the front with about three tight wraps and helicopter it off.
Snip the excess biot and add extra wraps to lock everything down.
Dub a medium noodle of tan dubbing for a thorax slightly thicker than the body and the bead.
Tie in a small brown hen feather and make about one to one and a half turns so the collar goes all the way around, filling the gap behind the bead.
Whip finish (about four turns) and put a drop of head cement on the thread behind the bead.