BH Bird Nest Olive - Bead Head. The Beadhead Olive Birds Nest nymph is another great color from the Birds Nest family. Imitated a number of aquatic insect life including the Mayfly Nymph. The Bead Head Olive Birds Nest Nymph is great all round performer for a number of different species including: Steelhead, Salmon, Trout and Carp.