Cory's Shearwater Calonectris diomedea

  • Order: Procellariiformes
  • Family: Procellariidae
  • Polytypic: 2 subspecies
  • Authors needed...


Distinguishing Characteristics

43 - 48 cm. 125 cm wingspan. 567 - 935 g. Large size. Upperparts gray-brown, sides of head dark. Throat white, underparts whitish. Can show a whitish band on the base of tail. Wings long, thin, with the inferior margin dark. Bill yellowish, dark on tip and hook-shaped, near the nasal holes, have a little pipe that help to remove excess salts. Legs webbed (fingers united by a membrane), flesh color. The male is usually more robust but males and females are very similar. The chicks are dark brown, similar to the rocks where the nests are placed, when grow, the dark down turns gray.

Similar Species

Greater Shearwater (Puffinus gravis) has the bill black, a cap black, collar pale on nape, and the basal margins of the feathers that cover the bottom of the wing are dark.

Detailed Description

Information needed. Contribute

Recommended Citation

Cory's Shearwater (Calonectris diomedea), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: