Ostrich Herl is long fluffy herl and is very popular for nymphs, tails & bodies. In the Saltwater nothing moves in the tail of the fly like Ostrich Herl. Ostrich Herl is a long, wispy feather that is often used to create the bodies and tails of flies. One of the benefits of Ostrich Herl is that it has a natural movement in the water that can help to make the fly look more lifelike and enticing to fish. It is also relatively easy to work with, making it a good choice for both experienced and novice fly tyers.