Combined elements of Harrop and Stalcup patterns. Tied here as a grey drake; change color/size to suit your needs.
hook - Dai Riki 300 #10
thread - MFC 8/0 sand
tail - moose body
body - turkey biot tan
thorax - dubbing tan
hackle - grizzly
wing - partridge
Part 1
mash barb, start thread at 3/4 mark; wrap to point above barb
clean, stack, measure (hook length) some moose body hair; tie in (take a wrap behind to help set the angle), trim
tie in (moistened) biot, notch side down for ribbed effect; wrap to 3/4 mark, tie off/trim
measure (hook length) a pair of partridge feathers; strip fluff off, tie in at 3/4 mark, set upright with some thread wraps