Measuring 14 3/4" in length, this unsplit English Walnut (Juglans regia) branch flute has been accurately tuned and sweetly voiced to a 6 holed high D minor pentatonic scale, playing 3 upper octave notes.  Some of the bark has been left on at the north end, transitioning to the exposed wood grain at the tone holes.  Bark fissures have been inlaid with crushed abalone shell that shines with a rainbow iridescence that doesn't show up in the photos.  To aid against wet-out (the build-up of breath condensation that can clog the windway of the flute) the bird has been fitted with a redwood shoe, for its absorption qualities, and a drain hole has been designed into the air chamber.  Deer lacing with abalone and carved horn bone beads holds the bird to the nest.  The branch for this flute was sustainably gathered, with respect and gratitude, along San Marcos Creek, in San Diego County, California, amongst a wild grove of English Walnut trees.