This is one of a series of flies Davie McPhail tied for the streamers365 project last year. I tied it back then too, but it was no where nearly as good as this one.
JOCK SCOTT STREAMER
Hook is a 2/0 partridge CS15 10xl.
Everything is per the pattern, except I used pintail for the throat instead of teal.
Tag: Flat silver tinsel
Rear Collar: Yellow hackle wrapped (yellow macaw used here)
Butt: Black ostrich herl
Body: 2 equal sections of black and yellow floss
Rib: Flat silver tinsel
Collar: Black hackle
Belly: White bucktail and a golden pheasant crest sweeping upwards
Wing: Yellow hackle flanked by red flanked by blue hackle flanked by a slip of bustard
Topping: Peacock herl and golden pheasant crest
Eye: Jungle cock
Davie sent a series of unique streamers to the project last year, all of which are on my to do list.
You can check them out here. I particularly like the Lion and Lioness pair, being a Leo, they're right up my street for tying, though they have a few custom colors and dyed feathers in there, it might take me a while to get the materials gathered up to tie them...