This one’s from William Anderson; one of the mods on the Flymphforum. Tied here as a March Brown; change color/size to suit your needs.
hook - Dai Riki 280 #14
thread - MFC 8/0 sand
tail/abdomen - pheasant tail
rib - small wire copper
collar - ostrich tan
wingcase - CdC dun
legs - partridge
thorax - dubbing fox squirrel
Part 1
mash barb/start thread; tie in rib, wrap to point above point
measure (gap width past bend) some PT fibers; tie in
wrap abdomen to 1/2 mark; tie off/trim
tie in ostrich, twist fibers and take a couple wraps; tie off/trim
rib thru abdomen and collar; helicopter end, cover with thread
tie in some CdC by the tips
