A bit of guesstimation here, since Mr. Brown holds his cards pretty tight to the vest.
hook - Dai Riki 135 #14
bead - 7/64 copper
underbody - non-tox .015
thread - Danville 6/0 black
rib - small wire copper
flashback - medium tinsel pearl
abdomen - tan rabbit
flash - Krystal Flash pearl
wing(?) stubs - goose biots rusty brown
shroud - olive dubbing/Ice Dub
thorax - peacock
Part 1
mash barb, slide on bead; make a few wraps of non-tox and jam inside bead
start thread, cover non-tox; tie in rib and wrap back to bend
tie in flashback
dub thread, dub abdomen
pull flashback over back, tie off/trim
counterwrap rib, helicopter end, cover with thread