Leisenring’s Favorite Twelve Wets: Old Blue Dun

The Old Blue Dun would make a fine representation of those bigger early season BWOs we get on the Farmington. Use a darker blue dun hackle and it’s easy to imagine it as a Hendrickson. Clearly, Leisenring thought highly of this pattern. And the trout you present it to will, too.

Old Blue Dun

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Hook: Dry or wet fly, 12-14
Silk: Primrose yellow
Hackle: Blue dun hen
Tail: 2-3 glassy fibers from a rusty blue dun cock hackle
Rib: One strand yellow buttonhole twist
Body: Muskrat underfur spun on primrose yellow silk, a little of the silk showing through at the tail
Wings: Starling (optional)
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Tying Notes: We’re back to the DMC embroidery floss (#744) as our buttonhole twist substitute. Make sure you pick out the muskrat guard hair — you want the soft, dark underfur. I didn’t leave a lot of the yellow silk showing through at the tail here; I wonder if Leisenring’s intention was to craft the illusion of an egg-layer? Nonetheless, this fly will hunt.

4 comments on “Leisenring’s Favorite Twelve Wets: Old Blue Dun

  1. […] dropper, a Grey Watchet in the middle, and depending on water depth and speed, a SHBHPT, Old Blue Dun, or March Brown caddis on point. The fish found favor with every pattern, which is always […]

  2. […] up, I switched out the bead head on point for a fly I’d never fished before. It was the Old Blue Dun, one of Leisenring’s favorite twelve. I’d always thought it would make a fine […]

  3. […] fur or dubbing, then brown partridge or dark dun hen hackle. Bead Head Soft-Hackled Pheasant Tail Old Blue Dun Squirrel and Ginger. Yeah, I know. Not a Hendrickson pattern. But on the Farmington, we often get a […]

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