I've seen deer cross the Missouri like it was a kiddie pool; turkeys (close relatives to chickens) can drown by looking up in a rainstorm. I know what I'm using to hackle my flies. Tied here as a Fall Drake; change color/size to suit your needs.
hook - Dai Riki 320 #12
thread - UTC 70 grey brown
tail - Congo Hair brown
rib - Uni-Stretch brown
abdomen - dubbing tan
wing - Congo Hair white
hackle - deer hair
Part 1
mash barb, start thread at 2/3 mark; tie in a clump of CH, trim butt/ cover with thread
tie in CH; fold, wrap to bend, trim shuck (gap width)
tie in ribbing
dub thread/dub body to wing
counter wrap rib; tie off/ trim