What it imitates
A generic grey mayfly dun — it looks like nearly everything.
When to fish it
Any river hatch when you can't identify what's on the water.
Materials
- Grizzly and brown cock hackles
- Grey dubbing
- Grizzly hackle fibres for tail
- Grizzly hackle tips for wings
- Grey 8/0 thread
Steps
- 1
Set a pair of grizzly hackle tip wings upright and divide them with figure-of-eight turns.
- 2
Tie in a tail of mixed grizzly and brown hackle fibres.
- 3
Dub a slim tapered grey body up to the wings.
- 4
Tie in one grizzly and one brown hackle and wind them together through the thorax.
- 5
Tie off, form a small head and whip finish.