BWO or Baetis
Blue Wing Olive hatches are one of the most consistent and important mayfly hatches for trout, especially in spring and fall.
Best Flies for the Blue Wing Olive (BWO) Hatch
Best time: Overcast days, late morning to afternoon
Season: Spring and fall (can occur year-round)
Water: Slow to moderate currents, tailwaters, spring creeks
Trout behavior: Selective feeding on small mayflies and emergers
Match your fly to trout behavior—dry flies for surface feeding, emergers for selective fish, and nymphs when trout are feeding below.
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Flashback Pheasant Tail-Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99A great improvement on this all-time classic pattern. Many nymphs take on a very shiny appearance right before emerging. Trout key in on this vuln...
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Flashback Soft Hackle Pheasant Tail - Tungsten
$1.32Original priceOriginal price $1.32 - Original price $1.32Original price$1.32 - $1.32Current price $1.32Take a beadhead Pheasant Tail and give it a heavier bead, and you have a faster sink rate, and slightly different action to foll even the wariest ...
View full details$1.32Original priceOriginal price $1.32 - Original price $1.32Original price$1.32 - $1.32Current price $1.32Value must be grater than or equal to 1. -
Flashback Pheasant Tail
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Like all the Pheasant Tail patterns, this one has a spot in every trout fisher's fly box. One of the best all time emerging Callibaetis patterns, ...
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Flashback Hare's Ear - Tungsten
$1.22Original priceOriginal price $1.22 - Original price $1.22Original price$1.22 - $1.22Current price $1.22A great improvement on this all-time classic pattern. Many nymphs take on a very shiny appearance right before emerging. Trout key in on this vuln...
View full details$1.22Original priceOriginal price $1.22 - Original price $1.22Original price$1.22 - $1.22Current price $1.22Coming soonValue must be grater than or equal to 1. -
Flashback Pheasant Tail - Tungsten
$1.22Original priceOriginal price $1.22 - Original price $1.22Original price$1.22 - $1.22Current price $1.22A great improvement on this all-time classic pattern. Many nymphs take on a very shiny appearance right before emerging. Trout key in on this vul...
View full details$1.22Original priceOriginal price $1.22 - Original price $1.22Original price$1.22 - $1.22Current price $1.22Value must be grater than or equal to 1. -
Flashback Pheasant Tail Curved Hook-Beadhead
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99A great improvement on this all-time classic pattern. Many nymphs take on a very shiny appearance right before emerging. Trout key in on this vuln...
View full details$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Value must be grater than or equal to 1. -
Foam Post Emerger BWO
$0.89Original price $0.99Original price $0.99 - Original price $0.99Original price $0.99$0.89 - $0.89Current price $0.89Yet another innovative pattern, that erases the boundaries of traditional dry fly thinking. And to the benefit of all fly fishers. Similar to the...
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Film Critic - Umpqua
$3.32Original price $3.69Original price $3.69 - Original price $3.69Original price $3.69$3.32 - $3.32Current price $3.32Bob Quigley, the king of the "film” designed the Film Critic to match mayflies at their most vulnerable stage of the hatch, while emerging from nym...
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FOD
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99The FOD, aka the Fly of Destiny, is designed to be a BWO emerger. It looks somewhat like a Pheasant Tail tied on a curved shank with black ice dub...
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Flymph BWO
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Flymphs have been around longer than most fly fishers realize. First coined by Pete Hidy in 1941, it is simply a floating nymph. With today's cla...
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Flash Quill Nymph
$0.99Original priceOriginal price $0.99 - Original price $0.99Original price$0.99 - $0.99Current price $0.99Blue Quill, Black Quill, Red Quill, Quill Gordon, are all essentially the same fly in different color variations meant to mimic a specific mayfly ...
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Flash Spinner BWO - Mayfly Dry Fly
$0.98Original price $1.09Original price $1.09 - Original price $1.09Original price $1.09$0.98 - $0.98Current price $0.98Flash Spinner BWO is much like a spinner, but with much more realistic wings. Spinners are the adult stage of mayfly life that involves reproduct...
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401K Baetis - Umpqua - Mayfly Dry Fly
$3.20Original price $3.55Original price $3.55 - Original price $3.55Original price $3.55$3.20 - $3.20Current price $3.20Designed with selective fish in mind, the 401K Baetis pays dividends for anglers. A high vis wing along with CDC and hackle keep the fly riding low...
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Fabio's Dun Deal - Rainy's
$3.59Original price $3.99Original price $3.99 - Original price $3.99Original price $3.99$3.59 - $3.59Current price $3.59A very successful BWO pattern, even in the slowest, pickiest of rivers.
$3.59Original price $3.99Original price $3.99 - Original price $3.99Original price $3.99$3.59 - $3.59Current price $3.59Save 10%Value must be grater than or equal to 1.
Blue Wing Olive (BWO) hatches often bring out selective trout, especially on pressured rivers and tailwaters. Matching size, profile, and presentation is usually the difference between refusals and eats. Most BWO fishing happens in sizes 16–20, with emergers outfishing dries when trout are feeding subtly in the film. Target softer seams, eddies, and slower edges during active hatches.
BWO hatches peak in spring and fall and are strongest during overcast or rainy weather. These mayflies can hatch multiple times a year and often produce longer, more consistent windows than other mayflies.
Trout key in on specific stages of the insect, so adjust your flies as their behavior shifts. Use dries when fish are rising confidently, switch to RS2s or emergers during subtle sips, and downsize if fish are refusing your presentation.