'Tis unnatural, even like the deed that's done. On Tuesday last, a falcon, tow'ring in her pride of place, was by a mousing owl hawked at and killed.
And Duncan's horses-a thing most strange and certain-beauteous and swift, the minions of their race, turned wild in nature, broke their stalls, flung out, contending 'gainst obedience, as they would make war with mankind.
'Tis said they eat each other
The old man and Ross are talking about the strange occurrences that are happening like how an owl ate a falcon.
They were suborned. Malcom and Donalbain, the king's two sons, are stol'n away and fled, which puts upon them suspicion of the deed.
Ross tells the old man about how the horses are disobeying their owners and are going wild.
'Gainst nature still! Thriftless ambition, that will raven up thine own lives' means! Then 'tis most like the sovereignty will fall upon Macbeth.
The old man tells Ross that he saw some of the horses eating each other like cannibals.
He is already named and gone to Scone to be invested.
Macduff comes onto the scene and proceeds to tell them that now Donalbain and Malcom are prime suspects in the murder of King Duncan.
Ross soon realizes that because King Duncan has died, Macbeth is next in line for the throne.
Macduff tells Ross and the old man that Macbeth has already left for Scone to be crowned the new King.