Once I sat in a field listening to Victor Wooten and whistling along with him. On a fence nearby was I think a brushed shouldered blackbird? Brushed shouldered something. It started singing with me and doing a little dance. Eventually it even started syncopating its part. Like, you could see it waiting for the timing to be just right for each note. On key and everything. Went on for about half an hour.

Birds are cool.