Wonderful for hackling fishing as well as fancy, just to look at, flies. Coque is the side tails from a rooster. It has Barbs that are stiffer and in most cases longer than Schlappen with an incredibly flexible rachis that wraps like a dream. The rachis is so tough that, my friend Bill Keough says it's like pulling barbed wire out of the ground. Maybe that's why it hasn't been that available much. It's stung so it won't be like pulling it out of the ground.