shearwater : Idioms & Phrases

• noun small black-and-white shearwater common in the northeastern Atlantic
  Puffinus puffinus.
  

WordNet

• (Zoöl.), an oceanic bird (Puffinus anglorum, or P. puffinus), called also Manx petrel, Manx puffin. It was formerly abundant in the Isle of Man.

Webster 1913