What is "manx shearwater"

Manx shearwater \Manx shearwater\ prop. n. (Zo["o]l.), A small black-and-white oceanic bird ( Puffinus puffinus, or Puffinus anglorum), common in the Eastern North Atlantic. Called also Manx petrel, Manx puffin. It is avariety of shearwater. It was formerly abundant in the Isle of Man.

Manx \Manx\, a. Of or pertaining to the Isle of Man, or its inhabitants; as, the Manx language.

Manx shearwater .

The Manx shearwater (Puffinus puffinus) is a medium-sized shearwater in the seabird family Procellariidae. The scientific name of this species records a name shift: Manx shearwaters were called Manks puffins in the 17th century. Puffin is an Anglo-Norman word ( Middle English pophyn) for the cured carcasses of nestling shearwaters. The Atlantic puffin acquired the name much later, possibly because of its similar nesting habits.