Fly Tying With Biots

“What’s a biot?” you may ask. Well, Ben Spinks has taken the time to deliver a thorough explanation, along with a recipe for tying an attractive no-hackle biot emerger. “Biots are the sturdy barbs found along the back edge of this feather. The narrow set of barbs in other words. All birds have biots, they are compulsory, flight simply couldn’t happen without them.” On SexyLoops.com.
Here’s another example of biots used in a pattern, Rene Harrop’s CDC Biot Parachute. On Danica.com.