How to Tie the Light Cahill Dry Fly Pattern

Aug 25, 2023 · 2 min read

Learn how to tie the Light Cahill dry fly pattern, including step-by-step instructions, a video tutorial, pictures, and much more. Improve your fly-tying skills here.

Material List

We've put together a kit that contains all the materials you need to tie this exact fly pattern.

Click the button below to shop the selection.

Buy Material Kit

The Light Cahill is a highly respected dry fly pattern that originated in the Adirondack region of New York before quickly spreading throughout the northeastern United States. The Light Cahil imitates the Pale Morning or Pale Evening Dun mayflies, which are common during the summer months in many streams and rivers throughout the country.

The Light Cahill remains a highly effective dry fly thanks to its realistic silhouette that mimics the shape and movement of a mayfly on the water's surface. The fly's body is tied with pale yellow or cream-colored dubbing, which helps it blend in with the natural color of the mayfly. The wings of the Light Cahill are tied with white or cream-colored hackle tips, and its tail consists of golden pheasant fibers or similar materials.

Step One

Gold fly hook clamped in black vise with white tying thread wrapped by pink-tipped bobbin — fly tying dry fly tutorial

Begin the pattern by running the thread from below the hook eye to the hook point to establish a base for the wing to rest.

Step Two

Light Cahill dry fly in vise with tan deer hair wing, white thread body and brown hackle tail on bronze hook

We’re using a wood duck feather for the wing. Strip the tip of its fuzzy fibers, pinch the feather over, then secure it on the shank with the webby section extending past the eye. Be sure to trim the stem before moving on.

Step Three

Hand fly tying Light Cahill dry fly: pale gray thread body on hook, tan feather wing, vise jaws on black background

Next, pull the forward-facing fibers toward the bend, then build a thread dam in front of the wing to push the fibers upright.

Step Four

Light Cahill dry fly with white thread body and brown feathered wings clamped in vise during fly tying on black background

Complete the wing section by separating the fibers with the bodkin, forming a wing on either side of the shank, then make figure-eight wraps to secure them.

Step Five

Vise holding Light Cahill dry fly during fly tying with white silk body, pale gray wing and brown hackle

Run the thread to the bend, then secure a rooster neck feather’s tip on the shank with the webby fibbers extending rearward for the tail.

Step Six

Light Cahill dry fly with cream body, white tail and upright brown hackle clamped in a fly tying vise on black background

Form a small dubbing loop on the thread, then advance from in front of the tail to behind the wing with overlapping turns for the body.

Step Seven

Hands tying Light Cahill dry fly with cream dubbing and tan and gray feather hackle mounted in a vise, fly tying close-up

Tie another rooster neck hackle by its tip, on the shank's side by the wing, with the flowy fibers facing upward.

Step Eight

Light Cahill dry fly with cream dubbing, tan hackle and pale tail mounted in vise for fly tying against black background

Make several turns with the hackle right below the wing, then in front of it before securing it and clipping the excess.

Step Nine

Light Cahill dry fly with light tan body, white tail, brown palmered hackle and upright wing held in vise on black background

Complete the tying process by forming a quick head, then secure a whip finish. Now it’s time to target some low-light sippers!

Written by

Stephen D' Angelo

Stephen D'Angelo is a fly fishing expert with a passion for fly tying, gear, and time on the water. From small-stream trout to saltwater flats fishing, Stephen brings hands-on experience across a wide range of species and scenarios — and he's always happy to help you find the right setup for your next adventure.

Comments

(0)

No comments yet. Be the first!