Gray Fox – Mayfly Dry Fly
While originally designed to imitate the Eastern Gray Fox, this is one of the most versatile large mayfly patterns you can carry. Its size, profile, and coloration make it an outstanding imitation of both Eastern and Western March Browns, and it’s our go-to pattern here in Oregon whenever March Browns are on the water. It also makes an excellent Brown Drake imitation throughout the Great Lakes region.
Gray Foxes are found throughout much of the eastern United States and southern Canada, inhabiting medium to dense forests and brushy areas.
| Specification | Detail |
|---|---|
| Pattern Type | Dry Fly |
| Imitation Species | Eastern Gray Fox, March Brown, Brown Drake |
| Region of Use | Eastern U.S., Southern Canada, Great Lakes |
| Best Time to Use | Spring, early summer |
FAQ
What types of insects does the Gray Fox pattern imitate?
The Gray Fox pattern imitates the Eastern Gray Fox, Eastern and Western March Browns, and Brown Drakes.
Is this fly suitable for use in the Great Lakes region?
Yes, it is an excellent Brown Drake imitation throughout the Great Lakes region.
What is the best time of year to use this fly?
The best time to use this fly is during spring and early summer when March Browns and Brown Drakes are active.

Maria Murray –
This fly performs well on both Eastern and Western March Browns. I’ve used it in Oregon and the Great Lakes, and it consistently catches fish when the water is active. The profile and color match natural insects well.
Emily Parsons –
A reliable pattern for spring fishing. Works well in brushy areas where March Browns are active. A bit larger than expected, but that suits the action on the water.
Elizabeth Pullman –
Used it during a March Brown run in Michigan. The fly stayed on the surface and attracted fish quickly. Great versatility for different fly patterns in the region.