Petrel de alas negras

Identificación

The black-winged petrel is a small species of petrel with long, narrow wings. Its length averages 29 centimetres (11 in) and its wingspan averages 67 centimetres (26 in). It has a small head and short black beak, a slender body and square-cut tail. It has a pale grey cap and nape, white cheeks and a dark grey collar. The dorsal surface of the body is pale grey and the upperside of the wings is pale grey near the base but dark greyish-black along the outer edge. The underparts are white and the outer edges of the wings are black. The tail is barred in black and white.

Taxonomía

Nombre científico

Pterodroma nigripennis

Autoridad

(Rothschild, 1893)

Orden

Procellariiformes

Familia

Proceláridos

Género

Pterodroma

Distribución y hábitat

The black-winged petrel is a pelagic species native to the East Pacific Ocean, living out at sea and only coming to land in order to breed. Its breeding range stretches from Lord Howe Island and eastern Australia to New Caledonia, New Zealand (the Kermadec Islands, Three Kings Islands, Chatham Islands) and the Austral Islands (French Polynesia) in the east. The largest colony in the world is on Macauley Island (Kermadec Islands). Outside the breeding season it migrates further north and most commonly occurs in a broad belt of ocean between Peru and Hawaii.

Área de cría

PO : Round I. (ne of Mauritius, c Mascarenes, sw Indian Ocean); Lord Howe and Norfolk is. (far e of Australia), Grande Terre (New Caledonia), n, e North I. and Kermadec Is. (ne of North I.) and Chatham Is. (e of South I.; New Zealand), Tonga and Cook Is. (c Polynesia), Bass Rock (=Marotiri, se Austral Is., e Polynesia), and Rapa (e Tubuai=Austral Is., se Polynesia)

Área no reproductiva

to waters off se Australia and Pacific Ocean se of Japan e to nw Mexico and Central America, Galápagos and Peru

Migración

Complete migrants

Conservación

Tendencia poblacional

declining