Neat! Here we have Shama thrush birds that migrate to the
city in the winter months. They have singing whistles that I notice can change over time. I often mimic it when I hear it roosting in my trees outside. It will mimic my mimicking for a bit, then insert a verrrry complicated version that makes me crack up.
Kind of like saying, "yeah, but you can't copy this...!" haha
I've also tried to whistle Beethoven's Fifth (Ba na na NAAAA), hoping one day to hear a variation being whistled, but so far, no such luck.
Of
course, it doesn't help that I'm not a great whistler...
...Connecting with Nature, connecting with Nature...