bird of ill omen
A person who brings bad news.
noun
Something which portends or is perceived to portend either a good or evil event or circumstance in the future, or which causes a foreboding; a portent or augury.
The ghost's appearance was an ill omen.
A rise in imports might be an omen of economic recovery.
A thing of prophetic significance.
A sign of ill omen.
verb
To be an omen of.
To divine or predict from omens.