Bivisibles

Black & White Bivisible

Hook - Mustad 94840 or equivalent

Thread - Black (or white)

Black hackle tied palmered over the body, with a few turns of white in front

Brown & White Bivisible

Hook - Mustad 94840 or equivalent

Thread - Black (or white)

Brown hackle tied palmered over the body, with a few turns of white in front

Golden Badger & White Bivisible

Hook - Mustad 94840 or equivalent

Thread - Black (or white)

Golden badger hackle tied palmered over the body, with a few turns of white in front

Grizzly & White Bivisible

Hook - Mustad 94840 or equivalent

Thread - Black (or white)

Grizzly hackle tied palmered over the body, with a few turns of white in front

Silver Badger & White Bivisible

Hook - Mustad 94840 or equivalent

Thread - Black (or white)

Silver badger hackle tied palmered over the body, with a few turns of white in front

Tying note: Tails can be added (same color as the aft hackle) and the body may be tinsel

Grizzly & White Bivisible

Hook - Mustad 94840 or equivalent

Thread - Black (or white)

Tail - Grizzly hackle fibers

Body - Flat silver tinsel

Grizzly hackle tied palmered over the body, with a few turns of white in front

Try different color rear hackle but keep the white up front.

Regarding the Bivisible: Some recipes have tails of hackle fibers (same color as the rear hackle), hackle tips (same color as the rear hackle), tinsel bodies and even dubbed bodies. Tie them how YOU see fit

"Bivisible - Fly Angler's OnLine Volumn 7 week 9