BUTTS AND EGG SACKS V

This appendage, or addition, is tied in and wrapped at the base of the tail which would be the rearmost part of the body of the fly. It consists of a chenille or yarn lump, usually yellow, simulating the egg cluster on many of the feminine fly species. The egg sack is sometimes made from unstripped ostrich herl or strands from larger flight quills. In the case of the Royal Coachman the butt is, of course, peacock herl.