The Wigeon

It is, according to legend, the ghost of a young man who killed his parents, and so is condemned to wander as a lost soul forever with a sack full of the bones of their ancestors.

It has a distinctive whistle that resembles musical notes do, re, mi, fa, sol, the, if, in that order up the tone to F and then down to the note itself. It is said that when the whistle is heard no danger near, as the Wigeon is far, but if you listen further it is near. It is also said to hear his whistle is a harbinger of death itself. You can be anywhere at any time.