Flies: March Browns

So, I’m writing about March Browns not because they are necessarily of great significance to the Smoky Mountain fly fisherman, but mainly because they’re just really cool bugs! Like many aquatic insects in the Smokies, this mayfly does not usually hatch abundantly enough to really get the trout keyed in on them, but it is worth keeping a few in your fly box. In other words, you probably don’t need fifteen different March Brown patterns in subtly different colors. Having a few of a basic pattern should do the trick.

March Brown Dry Fly

March Browns are big, usually a #12 or #10 hook size, and they tend to be the first mayfly of the year with any color. Most of your early spring mayflies are some version of grey, but March Browns usually have a light, reddish brown body with handsomely mottled wings of brown, tan and even yellow hues. Contrary to what their name might imply, these mayflies don’t hatch in March. Rather, they tend to show up, at least in the Smokies, around the third week of April and hang around for the first half of May.

March Brown Nymph

The nymphs are probably the most important stage for Smoky Mountain fishermen. While they have flat clingy bodies with muscular legs, making them very strong crawlers, when they lose their footing, they are terrible swimmers and easy pickins for a waiting trout. The nymphs tend to inhabit moderate to fast riffles and vary in color from tan to reddish brown to dark brown. A Hare’s Ear Nymph or Pheasant Tail Nymph are good generic imitations. I’ve also included one of my favorite patterns designed to specifically imitate a March Brown nymph.

Nymphing these patterns should be fairly effective all day but particularly early in the morning. Expect to see the adults hatching from late morning to early afternoon with a spinner fall near dusk.

Learn more about Smoky Mountain hatches and flies in my hatch guide.

March Brown Dry
Hook: #12 – #10 TMC 100 or equivalent
Thread: Brown 8/0
Tail: Brown hackle fibers
Body: Reddish tan dubbing (many companies sell a color called March Brown)
Wing: Wood Duck
Hackle: Brown and Grizzly

March Brown Nymph
Hook: #12 TMC 3761 or equivalent
Thread: Brown 8/0
Tail: Moose fibers
Abdomen: Rusty red floss
Rib: Stripped peacock stem
Wincase: Lacquered turkey
Thorax: Peacock herl
Legs: Brown hackle

Flies: Red Fox Squirrel Nymph

Even with all the newfangled fly patterns and fly tying materials available today, I usually find myself sticking more with the old staples, or at least pretty similar variations. And I stick with them for one main reason: They work! Created by fly tying guru, Dave Whitlock in the 1960’s, this fly definitely falls under the “old staple” category.

As disappointing as this may be to some, the fly was not named for Redd Foxx of Sanford and Son – you big dummy! Rather, it got its name for the simple reason that it is tied mostly from the fur and hair of a red fox squirrel. It is considered an impressionistic fly, meaning that it is designed more to look alive or “buggy” more than imitating a specific food source. We also lump these sorts of flies in the categories of “attractors” or “generals.” Or Orvis likes to call them “prospecting flies.”

So really, it’s a pretty good fly to fish anytime in the Smokies, but I think it is at it’s best in the early spring. I attribute that to the abundance of Quill Gordon nymphs in the water at that time, as this impressionistic fly imitates that nymph as well as any other I’ve fished. I’ve had a lot of success with the traditional, light red version of this fly, but tie them in a few other colors as well. Different colors might better imitate other food sources in the water, but may also better imitate the color of Quill Gordon nymphs found in a specific river, or even a specific stretch of river.

Quill Gordon Nymph

It’s hard to say just how selective these trout can get and how important it is to match the color of the nymph, but I’ve personally found Quill Gordon nymphs in Little River that range from a light reddish color, to tan, to grey, to dark reddish brown, to olive. You can see that the Quill Gordon nymph in the picture has more of a dark reddish brown color. Though it’s probably more of a confidence thing, it seems that some years a certain color just works better than another.  I like to fish double nymph rigs with two different colored nymphs until I zero in on their preference.

In any case, these Quill Gordon nymphs are pretty robust, and the beefy body on the Red Fox Squirrel Nymph seems to suggest that better than, say, the slender profile of a Pheasant Tail Nymph. And the picked-out fur body and soft hackle provide a lot of subtle, life-like movement.

Hare’s Ear Nymph

A close cousin to the RFSN, is the Gold Ribbed Hare’s Ear Nymph. This is another one of those staple flies that is really simple to tie and can be found in most any fly shop.   I will sometimes fish these in a tan or olive color as an alternative to the RFSN or even in tandem in a two nymph rig.

In all cases, I’m usually fishing these flies in fairly large sizes – typically in the #14 – #10 range. As the season progresses, I’m more likely to fish them in smaller sizes and lighter colors. They can be purchased or tied in beadhead or non beadhead versions. The non beadhead will typically have lead wire wrapped around the hook under the materials. I personally like the look and profile of the beadless version better. But that’s just one man’s opinion. Try them both and tell me what you think!

Learn more about Smoky Mountain hatches and flies in my hatch guide.

Below is Dave Whitlock’s original recipe for the nymph.  I fish the beadhead version most, and I tend to substitute commercial dubbing for the mixes he describes below.

DAVE WHITLOCK’S RED FOX SQUIRREL-HAIR NYMPH

HOOK: Tiemco 5262
THREAD: Black or orange 70 Wapsi Ultra Thread
HOOK WEIGHTING: lead wire, diameter of hook wire, 8 to 12 wraps
ABDOMEN: Belly fur from red fox squirrel skin mixed 50/50 with sienna or fox tan Antron dubbing OR Dave Whitlock SLF Dubbing – #1 (blended to my specs). Abdomen should be 1/2 to 2/3 of the overall body length
THORAX: Back fur from red fox squirrel skin mixed 50/50 with charcoal Antron dubbing OR Dave Whitlock SLF Dubbing – #2
RIB: Oval gold tinsel or orange-pearlescent Flashabou
TAIL: Small tuft of back fur from red fox squirrel skin
LEGS: (On sizes 10 and larger) Metz dark ginger back-hackle or back-hackle of Partridge, one turn