Puffinus

The genus Puffinus encompasses several species of long-winged oceanic birds, commonly known as shearwaters. These birds are characterized by their drab appearance, slender bills, and a wingspan ranging from 35 to 65 cm (14 to 26 inches). The name "shearwater" reflects their habit of gliding low over waves.1

Shearwaters typically nest in burrows on islands and coastal areas worldwide. They lay a single egg, incubated by both parents, who also raise the chick. Some species, like the sooty shearwater (P. griseus) and the common or Manx shearwater (P. puffinus), have extensive geographic ranges, breeding in one region and migrating to another. Unfortunately, some species, such as Newell's shearwater, Townshend's shearwater, and the Balearic shearwater, are classified as endangered or critically endangered due to threats like habitat loss and predation.1