Note to King Lear, 1.4.262

King Lear,
Act 1, Scene 4, line 262
kite: a type of hawk which often feeds on carrion. —There are other references to kites in Shakespeare, all of them extremely negative, as when Macduff reacts to the news that Macbeth has slaughtered Macduff's wife and children: "All my pretty ones? / Did you say all? O hell-kite!"

Image Source:
Allen Holmes Wildlife Gallery