Note to Hamlet, 2.2.578-580: "or ere this / I should have fatted all the region kites / With this slave's offal"

or ere this / I should have fatted all the region kites / With this slave's offal: if it weren't so [that I am a coward], before now I would have fattened all the kites in the air with the entrails ["offal"] of this slave [King Claudius].

A kite is a swallow-tailed hawk, known to feed on the bodies of the dead.

Part of the punishment of a traitor was to cut out his entrails while he was still alive.