stormy petrel

\STOR-mee-PET-ruhl\, noun:
1. Any of various small sea birds of the family Hydrobatidae, having dark plumage with paler underparts; also called storm petrel.


Bob: "Hey Jim, do you see that small sea bird over there, having dark plumage with paler underparts?"
Jim: "Yes, Bob?"
Bob: "Is that bird called a stormy petrel?"
Jim: "I think so, Bob."

2. One who brings discord or strife, or appears at the onset of trouble

--And then there is the Venus Fly Trap, commonly known as the "stormy petrel" of the Super Mario Brothers saga.