Hi Robert, a lovely fly. I'm intrigued by the 'blue' in the name as you don't leave any silk in view apart from the darkened down blue whip finish. Feels like you could have used any colour silk or other thread. As I don't have any heron feathers, would grey goose do the same job? Cheers
Wynn doesn't mention a shade of tying silk. I just used a vintage blue Pearsalls just to keep it in line with the fly's name. In theory you could use any colour and type of silk or tying thread.
