Biot Body Parachute Dun

CDC Biot Parachute, Adams

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Tying Instructions

1. Attach the hook to the vise and lay a thread foundation from behind the eye to the bend of the hook.

2. Select about 6-8 stiff hackles from a spade feather. The length should be the same length as the hook shank. Attach the tailing fibers at the bend of the hook and wrap the tag ends to about the middle of the shank. Trim the tags and wrap over.

3. Select 3 CDC feathers with a prominent stem for the wingpost. Keeping the tips aligned and position the at the 3/4 position of the hook shank.

4. Apply 2-3 tight wraps and trim off the tag ends. Secure with additional wraps over the ends and continue to thread wraps to the bend of the hook.

5. Select a goose biot and secure the tip to the bend of the hook with the notch facing downwards.

6. Wrap the biot forward. These are short so secure the end of the biot behind the wingpost with thread wraps.

7. Lift the CDC wingpost upwards and apply a number of thread wraps just in front of the post to keep the wingpost upright.

8. Next wrap around the base of the wingpost to provide a sturdy post for the hackles.

9. Attach the two hackles by their base to the front side of the wingpost. Leave enough bare quill of the hackle base so that it can be anchored cleanly to the vertical base of the wingpost with thread wraps without capturing any hackle fibers.

10. Secure the hackle base to the side of the wingpost.

11. Apply dubbing for a thorax around the wingpost, hiding the hackle ends.

12. Wrap the hackle around the base of the wingpost 3-5 times and secure the hackle with a couple of thread wraps just behind the eye of the hook.

13. Wrap a small thread head and use a half hitch tool to secure the thread. Then lift up on the hackle and apply a whip finish. A drop of head cement is recommended. I also trimmed the CDC somewhat for a cleaner appearance.

14. The finished CDC Biot Parachute, Adams.

 

 

Materials to Order Material, click the link
Hook	TMC 100 #16-22
Thread	Veevus 14/0 Gray
Body	Goose Biot, Natural Gray
Thorax	Superfine Adams Gray dubbing
Tail	Coq de Leon, Medium Dun
Wingpost	CDC Feathers, White
Hackle	Brown and Grizzly Saddle Hackles

Biot Body Parachute Dun

The Biot Body Parachute Dun utilizes biots in it’s construction. Biots are the stiff barbs found along the leading edge of a primary flight feather. They are necessary to give birds flight. There are only two birds that fly tiers utilize biots, Turkeys and Geese. The goose biots are shorter and wider than turkey and are often used for tails on stoneflies and wingbuds. For bodies, Goose biots can be used on Mayfly patterns in the #16-20 sizes. Turkey biots are much longer and often will be a good choice for mayfly patterns in sizes 10 to 14.

For patterns smaller than #14, Turkey biots are too large and other materials such as stripped quills will work better. Turkey Biot Quills are sold as entire feathers and the “lift” side of the feather can be used for bodies but the barb is softer and thinner than the biot side. These barbs are suitable for use on sizes #16-22 but protect them with a layer of glue such as Zap-a-gap or Loons Clear Finish.

Two ways to wrap

Depending on how the biot is wrapped, you can get either a ribbed appearance or a smooth one. Peel the biot from quill. At the base of the biot is a notch or indentation. Attaching the biot to the hook shank, if the notch faces downward the body will be smooth, if it faces upward, the body will have a series of fringed barbules. The smooth body will require that you overlap the biot somewhat to hide the leading fringe side. Remember to keep your biots damp when in use as this will keep them from splitting, just like quills.

Fly Tiers

A number of fly tyers are known for their use of biot bodies. A.K. Best preferred Turkey Biots for most of his mayflies that were #10-14 but preferred stripped quills for smaller mayflies. Rene Harrop utilizes Turkey Biots for many of of his mayfly duns down to a size 22. Rene will often use CDC as a wingpost. And, the late Shane Stalcup, was also fond of using goose biots with a CDC hackle.

Parabiot BWO

Hook	TMC 100, sizes 12-18
Thread	Veevus 14/0 Gray
Body	Olive Turkey Biot
Thorax	Olive Superfine
Tail	Medium Dun Hackle Fibers
Wingpost	Zlon Dun
Hackle	Medium Dun Saddle

Parabiot Sulphur

Hook	Tiemco 100 #14-18
Thread	Veevus 10/0 Light Cahill
Body	Turkey Biot Orange
Thorax	Pale Yellow Superfine Dubbing
Tail	Light Dun Microfibbets
Wingpost	Fl Chartreuse Antron Yarn
Hackle	Light Ginger Hackle

Parachute Dun, Mahogany

Hook	Tiemco 100 #12-14
Thread	Uni-thread 8/0 Rusty Brown
Body	Mahogany Turkey Biot
Thorax	Mahogany Brown Superfine
Tail	Dun Spade Hackles
Wingpost	White Turkey Flat
Hackle	Dun

CDC Parachute Dun, Olive

Hook	TMC 100, sizes 12-16
Thread	Uni-thread 8/0 Olive
Body	Turkey Biot, Olive Dun
Thorax	Superfine, callibaetis
Tail	Dark Dun Mayfly Tails
Wingpost	White Poly Yarn
Hackle	Dark Dun CDC