The Birds Nest brown is a classic trout nymph. This famous pattern effective imitates a number of different insects but it does the best imitating mayfly nymphs. The Birds Nest Brown can be a deadly fly when blue winged olives are hatching. Anglers often fish this pattern in a single or double nymph rig or even a dry dropper setup as well. In addition to imitating mayfly nymphs this pattern can also be successful as a prospecting pattern.
