Tied on a #12 2xl nymph hook
Mallard tail (yellow died) - around 8 or 10 fibers - length of the hook and fold the butt end over for the nymph back
Peacock Herl body
Grizzly hackle (red used here)
ultrawire (small) ribbing
Start your thread and tie in the tail, then fold the butt section back for later use - do not trim it off.
tie in your wire and hackle
tie in your herl (3 strands used here) leaving thread about 2 eye lengths from eye.
Wrap the herl forward and tie down, trim excess
Wrap the hackle forward and counter wrap the wire rib
Pull the mallard flank over the top and tie it down
Trim any hackle that angles up, leaving the hackle that goes to the sides or down
Whip finish and add a little head cement and your done.
if you do everything the same, but swap out the mallard flank for olive or burnt orange maribou, you basically have a Denny's stillwater nymph (Denny uses simi-seal for the body, and I use peacock herl but they are basically the same)
This (and Denny's) nymph is extremely effective for stillwaters when baetis or damsel nymphs are in the water. I fish this either on a sinking line or on a floating line generally down about 2 to 4 feet. When fishing, impart a little action to it, i.e. from your tube or boat, or shore, cast it out, let it sink a little and then bring it back in a couple 2 inch strips, followed by a couple second pause. I like to also fish it right at the edges of weed beds where they drop off to deeper water. I have caught fish (16 to 20 inchers) at Davis Lake on this fly when nobody else was catching anything. It also works well at frenchman's.