I was in the back yard just now and saw a house finch land on the anemometer--- you know, those wind-speed dealies on home weather stations-- and go round and round and round. Lucky for her it was only maybe 80 or 90 rpm at the time and not gusty. It was a good ten seconds before she flew off to find another ride somewhere else (I presume that's what she's doing because that's what I'd do if I were a house finch.)
It was hard to tell what she thought of the experience. Finch faces aren't very expressive.
That may have been the first time I ever laughed out loud at something happening in nature. I hope she wasn't embarrassed!