The Tragedy of Macbeth — Act 2, Scene 4: Outside Macbeth's castle.

Ross speaks with an old man about the strange and unnatural signs that have followed Duncan’s murder. They describe darkness lasting in daytime, a falcon killed by a smaller owl, and Duncan’s horses turning wild and even eating each other. Macduff arrives, and Ross asks what is happening. Macduff says Macbeth has killed the king’s chamberlains, but he also reports that Duncan’s sons, Malcolm and Donalbain, have fled, which makes them look guilty. Ross says Macbeth is likely to take the crown and notes that he has already gone to Scone to be invested. Macduff says Duncan’s body has been taken to Colmekill, and the men part.