The video currently has more dislikes than likes but it does show how to use it..

Davie McPhail has almost 700 fly tying videos on YouTube. He covers nearly any type of fly you can imagine.

Also, the alula feather for tenkara flies.

In his book "Wet Flies" Dave Hughes talks about both types. Roger Fogg, in his excellent book "A Handbook of North Country Trout Flies" writes that the rolled wing goes back to the eighteenth century and continued to be used until the First World War.

If you look at this book you can zoom in on each fly pictured. Maybe not as good as a photograph but it is original.

https://www.biodiversitylibrary.org/ite ... 9/mode/1up

Fly tying goes back to at least 1496 and after so much time the meaning of words can change. Dub originally meant dress. In the US we are fly tyers but in England they call themselves fly dressers. The modern meaning of dub wouldn't make sense with regard to herl. Dun is another subject that can be ...

A lot of Pritt's are dubbed with herl - peacock, magpie and heron etc.

From "A Treatise of Fishing with an Angle" These are the 12 flies with which you shall angle for trout and grayling. You shall dub them as follows. (dress) The black leaper. the body of black wool and lapped about with the herl of the peacock tail: and the wings of the red capon with a blu...

This book might help with your question.

https://books.google.com/books?id=Nd6Ac ... &q&f=false

Thanks Ray for bumping this up!