Birds.

[Todd Madson <crash@waste.org>]

Yes, I've heard Birds as loopers - see Kit Watkins environmental
recording, "Circle" - it's on Linden Music LM 2009.  

Instruments: crickets, katydids, great honrned own, deer snorts, filtered
keyboard globs, wooden rattles, canada geese, cricket chorus, vibes,
looped eastern screech owl, english horn, freight train, birds (wood
thrush, northern oriole, and red-bellied woodpecker), tamboring bells,
tuned drums, hi-hat, rainstick, shells, harmonized flute, voice, triangle
wooden curtain, stream, cicadas, resonant thunder, wind, metal bowls
detuned, cricket, detuned train cars, light rain, heavy rain, detuned
hummingbirds, slow vibes, babbling brook, tumble drums, red-tailed hawk,
wood block, drippage, wine glasses, mourning dove, eastern screech owl,
kitty purrs and ruffled grouse.  

It's cool, though, since many of the sections are obviously looped
(the freight train one is really amazing), and the bird sections are
very ethereal.  Check it out.

-Todd.