When I was a little kid, one used to perch itself outside our window (we lived on the top floor of a two story house) and whistle the Lone Ranger theme. It was an absolute hoot. My dad tried to record it on one of the earlier reel to reel jobs, but the sound was terrible at best. They're good imitators to be sure...a lawn mower, eh? Aren't you glad it isn't an earth mover?