storm petrel
(also stormy petrel), type of small blackand white seabird of the N Atlantic and Mediterranean, said to be active before a storm 海燕(产於北大西洋及地中海, 据称暴风雨前很活跃).
On the occasions when they have pushed to shore an unconscious human being they have much more likely done it out of curiosity or for sport, as in riding the bow waves of a ship.