Brewer's: Stormy Petrel
(A). An ill omen; a bad augury.
“Dr. von Esmarch is regarded at court as a stormy petrel, and every effort was made to conceal his visit to the German emperor.” —The World, 6th April, 1892, p. 15.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894