Mallard Flank Natural Feathers for Fly Tying or Tying FliesnCreate a variety of fly patternsnUse these to create gills, tails, and wingsnThe Mallard Flank feathers are very versatile, you can use them to create gills, tails, and wings on nymphs and dry flies, or create mottled heads and bodies on your streamer patterns. Subtle in markings, these feathers offer the tyer a host of possibilities. Trout flies, steelhead flies, and even full dressed salmon flies call for these beauties.