Variation on the original Featherduster; the bright thorax is supposed to represent an egg, maybe? Not sure, but it's effective for spawners running into Yellowstone out of Hebgen Lake.
hook - Dai Riki 280 #8
underbody - .030 non-tox
thread - Danville 6/0 brown
rib - medium wire copper
tail - pheasant rump fibers
abdomen - ostrich herl black
wingcase/legs - pheasant tail fibers
thorax - ostrich herl hot pink (yellow, orange can be used, too; just make it bright)
Part 1
mash barb, wrap front 1/3 with non-tox
brush non-tox with Super Glue; start thread, tie in rib, wrap to point above barb
strip some fibers off a Pheasant rump feather; measure (gap width past bend), tie in/trim butts
tie in some ostrich herl by the tips; twist around thread and wrap to 2/3 mark, tie off/trim
rib abdomen, helicopter end, cover with thread