Thanks to Chuckar Spey and Smalma I found enough American Widgeon and Merganser to fill the swing leaf of my box with Glasso Gold Herons.
Hook: Bob Veverka spey size 2 or Alec Jackson spey hook size 3.
Body: Rear two-thirds flat gold tinsel. Front one third orange seal fur.
Rib: Oval gold tinsel.
Hackle: Grey heron one side stripped. I used blue eared pheasant.
Throat: Merganser or American Widgeon.
Wing: Merganser or American Widgeon.