Blue Winged Olive Emerger Fly Tying Pattern. River Fly Fishing Trout & Grayling. BWO. Mayfly. CDC.

A Blue Winged Olive emerger fly fishing pattern, which works really well on rivers for trout and grayling when BWOs are hatching. A simple, quick and very effective fly pattern to dress and one that I hope brings you luck. Fly dressed by Steffan Jones of www.Fishing-Wales.com