Crows in dreams are traditionally read as omens, though more often they point to hidden knowledge than literal death -- something you sense is ending or about to be revealed. A crow's watchful presence can reflect insight arriving in an unsettling form, asking you to pay closer attention rather than look away. If the crow unsettles you, the dream may simply be flagging a truth you've been avoiding.
He who is naturally well affected unto Astrology shall verily pronounce more certain Judgments. - William Lilly (1602.-1681.)