BH Pheasant Tail Nymph - Bead Head. The Bead Head Pheasant Tail Nymph is a fly that provides top results no matter the circumstance. The Bead-Head Pheasant Tail imitates such a variety of aquatic life that it enables it to be incredibly effective on both rivers or still waters. It is used widely across North America, from Northern Canada, to southern Florida. The Beadhead Pheasant Tail Nymph is one of our top selling flies that we sell, which is why I personally have had such great results using this fly, especially in Southern Ontario, and British Columbia.