All text, graphics, and sound clips are copyrighted to Doug Von Gausig, 1997.
Commercial use is expressly forbidden without prior written consent.
Other uses of this material need to be discussed with the author prior to use. I also, by way of some small authority, have a degree in biology and have studied evolution and natural selection all my life. In that process, my awareness of the vocalizations became much more acute. I began to notice more and more subtleties in the sounds I had recorded. Occasionally I realized, while looking at a spectrogram, that I had seen this individual bird's vocal patterns before.