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The pattern notebook · dry

Blue Dun

How do you tie a Blue Dun?

Blue Dun is a dry fly pattern for Rainbow Trout, Brown Trout, Brook Trout. Find its 7 materials and 11 tying steps below.

Difficulty
2 of 5
Target species
Rainbow Trout, Brown Trout, Brook Trout
Pattern designer
Traditional (British origin, pre-1800s)

Added to catalog · Updated

At the vise

Materials

  • Dry Fly Hook, TMC 100, sizes 14-18
  • Thread (8/0), Gray
  • Tail: Medium Dun Hackle Fibers
  • Body: Muskrat Fur Dubbing, Natural Gray
  • Wing: Mallard Quill Segments, paired
  • Hackle: Medium Dun Dry Fly Hackle
  • Head Cement

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Tying instructions

  1. Secure the hook in the vise. Start gray thread behind the eye.

  2. Wrap thread rearward to the bend, building a smooth base.

  3. Tie in 8-10 medium dun hackle fibers at the bend for the tail, one shank-length long.

  4. Select matching segments from left and right mallard wing quills for the wings.

  5. Tie in the quill segments upright at the 2/3 point, curved sides facing each other.

  6. Stand the wings with a thread dam and separate with figure-eight wraps.

  7. Dub a thin noodle of muskrat fur onto the thread.

  8. Wrap the dubbed body from the tail to the wings, forming a slight taper.

  9. Tie in a medium dun hackle behind the wings. Wrap 2-3 turns behind and in front of the wings.

  10. Tie off the hackle and trim. Build a small thread head.

  11. Whip finish and apply head cement.