Top 5 Fall BWO Patterns – Fins and Feathers Bozeman
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Top 5 Fall BWO Patterns

Blue winged olives also referred to as BWO's and baetis can be a prolific hatch all around Montana especially in the Bozeman area. These bugs hatch both in the spring and in the fall and are a very important food source for trout. They tend to be slightly smaller in fall but trout can focus on them just as much as they do in the spring. While hatching, these bugs go through a number of stages where they are susceptible to predation. This vulnerability makes them an easy target for trout which can result in both good dry fly fishing and nymphing when baetis are active. There are several patterns out there that imitate BWO's so I will run you through my top 5 baetis imitations that seem to produce the most trout.

1. BWO Sparkle Dun - This is a great baetis dun pattern that floats high and gets gobbled by hungry trout. You can get away with fishing a size 16 in this pattern while still getting fish to eat this dry fly.

2. Olive Micro May - Very realistic baetis nymph that has a pearl wing case and heavy bead. This pattern comes in a #14-#18 and works well on all of our Bozeman rivers.

3. Olive BL Bubble Emerger - When fish look like they are rising but won't take you full on dry fly, tagging this emerger behind your dry will fool even the trickiest fish.

4. Gray Little Green Machine - This pattern is good when fished on a full on nymph rig or slightly under the surface short leashed or behind a dry fly.

5. BWO Quill Body Parachute - This dun pattern is good for prospecting and covering actively rising fish. Very easy to see and high floating this fly accurately imitates baetis adults.

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