BH Wooly Bugger Brown - Bead Head. Resembling a wide variety of aquatic life the Brown Beadhead Wooly Bugger does a fantastic job at imitating the leech, which belongs to the phylum Annelida, and the class Hirundinea. Leech Patterns have proven to be especially effective in the evenings. The early spring, and late fall are also times where the leech excels as the trout are skimming in the shallower waters. The Brown Bead Head Wooly Bugger has demonstrated time and time again that it is more than capable at saving a rather difficult fishing session.