The following fly has an example of one of these latter feathers. Apologies that the pic does not do the feather justice, but the appearance is quite striking to the eye. Fly not used as yet but I am hoping a local brown or two will find the pattern to it's liking: I had a smaller local caddis fly in mind.
Hook: TMC 2499SP BL
Thread: Gudebrod 6/0 green BCS30
Rib: Silver wire
Body: Thread
Thorax: Couple of turns of Arizona synthetic peacock (Hey, not used the stuff for a long time so thought I'd give it a use!)
Hackle: Shining Cuckoo throat feather
![Image](http://i227.photobucket.com/albums/dd68/matuku/bfbc48d5.jpg)