A combination of rasps, gasps, and whistling sounds accosts all who float the lake. We can even hear it over the sound of the outboard at full throttle.  Wild burros have found the perfect habitat on the low flats of the east side of the lake.  Bands of 10 or more seem to stake out a section to call home.  The racket begins as they run off interlopers and occasionally erupts among members of the same band.  Often we saw no apparent logic for the skirmish but the whole thing is great fun to watch.