Close your eyes and pretend you are leisurely getting ready for the day. Also...insert a screaming Professor who is climbing up your legs as though his life depended on it.
Then imagine you hear THIS sound- oh, and to get the full effect, turn up the volume as loud as possible.
Did you know that is the sound cranes make?
I had no idea! I had to actually look it up in my bird book, which says, "Often heard before seen, they have a very distinctive rattling call." No joke! They wandered around our yard most of the morning, then finally drifted away...very much to our ear's happiness.