...from a friend...

I went up to the local coffee shop to buy a latte.  The cross walk at
the light is equiped with sound devices to let blind people know when
it is time to cross.  As I crossed with Kate i heard the familiar
"beep, beep".  As I approached the other side I saw the distinctive red
hand signal that the light had changed.  And yet the "beep beep" kept
going.  What gives?

I turned back and saw in a tree directly above the light signal a
mockingbird repeating the "beep beep".  And I immediately thought to
myself, "now that is an accident waiting to happen!"