The mottled petrel (''Pterodroma inexpectata'') or kōrure is a species of seabird and a member of the

gadfly petrel The gadfly petrels or ''Pterodroma'' are a genus of about 35 species of petrels, part of the seabird order Procellariiformes. The gadfly petrels are named for their speedy weaving flight, as if evading gadflies (horseflies). The flight action is ...

s. It usually attains in length with a wingspan. This species is highly

pelagic The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth (as illustrated on the right). The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or wa ...

, rarely approaching land, except to nest and rear young. The mottled petrel feeds mostly on fish and

squid True squid are molluscs with an elongated soft body, large eyes, eight arms, and two tentacles in the superorder Decapodiformes, though many other molluscs within the broader Neocoleoidea are also called squid despite not strictly fitting t ...

, with some

crustaceans Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

taken. It is a transequatorial migrant, breeding in the islands of

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

, and migrating to the

Bering Sea The Bering Sea (, ; rus, Бе́рингово мо́ре, r=Béringovo móre) is a marginal sea of the Northern Pacific Ocean. It forms, along with the Bering Strait, the divide between the two largest landmasses on Earth: Eurasia and The Ameri ...

, concentrating in the

Gulf of Alaska The Gulf of Alaska (Tlingit: ''Yéil T'ooch’'') is an arm of the Pacific Ocean defined by the curve of the southern coast of Alaska, stretching from the Alaska Peninsula and Kodiak Island in the west to the Alexander Archipelago in the east, ...

and the

Aleutian Islands The Aleutian Islands (; ; ale, Unangam Tanangin,”Land of the Aleuts", possibly from Chukchi language, Chukchi ''aliat'', "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a cha ...

. The mottled petrel uses burrows and rock crevices to nest in. It was formerly more numerous than today. The species' numbers have been and continue to be affected by predation by introduced mammals. Chicks have been reintroduced to Maungaharuru, hills 24 km from the sea, in

Hawke's Bay Hawke's Bay ( mi, Te Matau-a-Māui) is a local government region on the east coast of New Zealand's North Island. The region's name derives from Hawke Bay, which was named by Captain James Cook in honour of Admiral Edward Hawke. The region is ...

. File:Pterodroma inexpectata (AM LB4282).jpg, alt=Pterodroma inexpectata mount from the collection of Auckland Museum, ''Pterodroma inexpectata'', Auckland Museum collection

References

* "National Geographic" ''Field Guide to the Birds of North'' ''America'' *'' Seabirds, an Identification Guide'' by Peter Harrison, (1983) *''Handbook of the Birds of the World Vol 1'', Josep del Hoyo editor, *"National Audubon Society" ''The Sibley Guide to Birds'', by David Allen Sibley,

External links

Mottled petrel profile
- Birdweb.org
Mottled Petrel, New Zealand Birds Online

mottled petrel The mottled petrel (''Pterodroma inexpectata'') or kōrure is a species of seabird and a member of the gadfly petrels. It usually attains in length with a wingspan. This species is highly pelagic, rarely approaching land, except to nest and r ...

Birds of the South Island

{{Procellariiformes-stub