Ok , maybe silly … But am looking for flies to tie for brook trout in small streams in colorado , above 5000 ft
Thanks in advance
Sorry, but my flies work at 4000 feet or lower. They would include a BWO in sizes 18 to 22, Para Adams in the same size range, and a Griffith’s Gnat in sizes 20 to 22.
Brad
I think all you need is a royal wulff - 12 thru 18. But para Adams in the same size should also work.
If Mr. Patterson was not hanging out at the rehab center he might recommend a Guacamole Stick Bug, that is what he gave to fish the Elk which resulted in brookies. I also had success on a blue assassin that day, considerable below 4,000 ft. But, I’ll bet ya, the trout don’t have an altimeter.
At 8,000’ in Wyoming all the fly’s Kaboom1 listed worked!! 
Having fished for those Brookies in most western states for quite a few years I agree that most any of the patterns will
work. However I do believe that flies in sizes 8 to 12 are very effective and easier to remove without hurting the fish. That being said be sure you take along some Rio Grand Kings.
Hope you have a great trip.
Tim
Western Blue Dun. A brookie killer.
http://www.fishingwithflies.com/WesternBlueDun.html
Joe
Kaboom1 , I can almost see that grin from here in Colorado Springs , want to thank you all so far so good ;; have to fish that size( 18-24) here in colorado on the ark. So to see yA can fish bigger for littler fish is always good
Royal wulff, yellow humpy, x-caddis or elk hair caddis… Maybe a hopper pattern orother terrestrials, some Adams wouldn’t hurt .Brookies I have found to be pretty aggressive and sometime gullible!
An EHC with pale yellow dubbed body, brown hackle and bleached elk, and #16 yellow Humpies…sizes #14-#10. And C2C and Squirrels Nest nymphs. My standard Brookie fare.
Pretty much anything will catch brookies. I have caught them on Royal Wulffs when all that was left was a pair of wings and some unraveling thread. I would use those, small hoppers, anything bushy like an EHC, and if you want to fish subsurface, a small olive or black bugger is all you need. In lakes, we usually only bother with buggers in #10 and foam hoppers in 12 or 14.
I don’t think there are any brookie streams BELOW 5000 feet in Colorado, are there? Anything much below my 5700’ is warmwater.
Foam Backed Convertible worked great on the Clark’s Fork outside Cooke City, MT (not the Clark Fork on the west side of the Divide). Like DG said, though, pretty much anything got their attention.
Regards,
Scott
Something in the #12-16 size range with a white wing, peacock body, and lots of hackle: Trude, Wulff, that fly of Scott’s, Clacka Caddis, H&L Variant…
#16-18 BH Prince dropper.
#14 Bob Hopper and #16 flying ants in late summer.