Goose Biots Natural White 3 pack Biots are the leading edge of the flight quills of large birds. They have a sharp taper and are often used on nymph patterns such as the prince nymph. Goose Biots can be used to create tails and wings on nymphs, spines on stickleback patterns and pincers on hellgrammite patterns. Biots can also be wound onto a hook shank as a body material on small dry flies and midges, creating an interesting segmented body