BH Bird Nest Tan - Bead Head. This is the tan coloured variation of the Bead Head Bird Nest Nymph. It is an effective searching nymph which is extremely productive for Trout and many warmer water species, including Carp & Smallmouth Bass. The Bead-Head Tan Birds Nest is a wonderful Mayfly Nymph imitation and is recognised as a successful tool for spring and autumn run Steelhead & Rainbow. If you havent had the privilege to target Carp on the fly yet then you don't know what youre missing this is one of the most in-demand species in North American & Canada.