Not 100% sure but I believe Loren Williams originated this pattern. Tied here as a PMD; change colors/size to suit your needs.
hook - Dai Riki 125 #16
thread - Danville 6/0 pale yellow
rib - x-small wire copper
tail/abdomen - pheasant tail
wing - snowshoe hare (original calls for beaver; use whatever suits you)
wingcase - Congo Hair pale yellow
thorax/head - dubbing pale yellow
legs - partridge
Part 1
mash barb, start thread; tie in rib, wrap to bend
measure (gap width) some pt fibers; tie in/wrap ti point above point
rib abdomen; helicopter end/cover with thread
clip out a clump of snowshoe, measure (tips to hook bend); tie in/trim
tie in some CH