Hook 1 (= size 14)
Wings - Hackled with a feather from the inside of a Woodcock’s wing
Body - Ash-colored silk, wrapped over with Heron’s herl
* Certain species of Heron is an illegal tying material in the USA. A substitute is gray goose.
Federal Register :: General Provisions; Revised List of Migratory Birds
I'm not into tying with silk threads or tying for museums. I use thread I have on hand.