The Nelson Bird
Alternate name for the black-capped chickadee.  Named after Nelson Muntz, the bully on the Simpsons with the lackadasical and mocking laugh: "Ha-ha."  The black-capped chickadee has two songs, the familiar 'chick-a-dee-dee-dee!' and a song that sounds like Nelson's 'Ha-ha." laugh.  Listen here:  http://www.learnbirdsongs.com/birdsong.php?id=12
Chris:  Hey!  That bird sounds just like Nelson on the Simpsons!
Mary: Yeah, that's The Nelson Bird!  I think it's real name is the chickadee.