The grey noddy or grey ternlet (''Anous albivitta'') is a

seabird Seabirds (also known as marine birds) are birds that are adapted to life within the marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same enviro ...

belonging to the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Laridae Laridae is a family of seabirds in the order Charadriiformes that includes the gulls, terns, skimmers and kittiwakes. It includes around 100 species arranged into 22 genera. They are an adaptable group of mostly aerial birds found worldwide. ...

. It was once regarded as a pale

morph Morph may refer to: Biology * Morph (zoology), a visual or behavioral difference between organisms of distinct populations in a species * Muller's morphs, a classification scheme for genetic mutations * "-morph", a suffix commonly used in tax ...

of the

blue noddy The blue noddy or ''hinaokū'' or ''manuohina'' (''Anous cerulea'') is a seabird in the family Laridae. It is also known as the blue-grey noddy. It is found in American Samoa, the Cook Islands, Fiji, French Polynesia, Kiribati, Marshall Island ...

(''Anous cerulea'') but is now usually considered to be a separate species.

Taxonomy

The first formal description of the grey noddy was by the French ornithologist Charles Lucien Bonaparte in 1856 under the binomial name ''Procelsterna albivitta''. The specific name ''albivitta'' is from the Latin ''abus'' for "white" and ''vitta'' for "band" or "head-band". The grey noddy was formerly placed in the genus ''Procelsterna''. A molecular phylogenetic study published in 2016 found that the five noddies formed a single clade with the grey noddy and

in ''Procelsterna'' nested within the species in the genus ''Anous''. The authors proposed that the noddies should be merged into a single genus ''Anous'' and that ''Procelsterna'' should be considered as a junior synonym. Three subspecies are recognised: *''A. a. albivitta'' ( Bonaparte, 1856): Lord Howe,

Norfolk Norfolk () is a ceremonial and non-metropolitan county in East Anglia in England. It borders Lincolnshire to the north-west, Cambridgeshire to the west and south-west, and Suffolk to the south. Its northern and eastern boundaries are the No ...

and

Kermadec Islands The Kermadec Islands ( mi, Rangitāhua) are a subtropical island arc in the South Pacific Ocean northeast of New Zealand's North Island, and a similar distance southwest of Tonga. The islands are part of New Zealand. They are in total ar ...

Tonga Tonga (, ; ), officially the Kingdom of Tonga ( to, Puleʻanga Fakatuʻi ʻo Tonga), is a Polynesian country and archipelago. The country has 171 islands – of which 45 are inhabited. Its total surface area is about , scattered over in ...

*''A. a. skottsbergii'' ( Lönnberg, 1921):

Henderson Henderson may refer to: People *Henderson (surname), description of the surname, and a list of people with the surname *Clan Henderson, a Scottish clan Places Argentina *Henderson, Buenos Aires Australia *Henderson, Western Australia Canada * H ...

Easter Easter,Traditional names for the feast in English are "Easter Day", as in the '' Book of Common Prayer''; "Easter Sunday", used by James Ussher''The Whole Works of the Most Rev. James Ussher, Volume 4'') and Samuel Pepys''The Diary of Samuel ...

, and

Isla Salas y Gómez Isla Salas y Gómez, also known as Isla Sala y Gómez ( rap, Motu Motiro Hiva), is a small uninhabited Chilean island in the Pacific Ocean. It is sometimes considered the easternmost point in the Polynesian Triangle. Isla Salas y Gómez and its s ...

Islands (west of Chile) *''A. a. imitatrix'' ( Mathews, 1912): San Ambrosio and San Félix Islands (west of Chile)

Description

The grey noddy is long with a wingspan of and a weight of about . The tail is fairly long and notched. The plumage is pale grey, almost white on the head and underparts but darker on the back, tail and wings. The wings have dark tips and a white hind edge and are mainly white underneath. The eye is black and appears large due to the black patch in front of it. There is a white patch behind the eye. The thin, pointed

bill Bill(s) may refer to: Common meanings * Banknote, paper cash (especially in the United States) * Bill (law), a proposed law put before a legislature * Invoice, commercial document issued by a seller to a buyer * Bill, a bird or animal's beak Plac ...

is black and the legs and feet are also black apart from pale yellow webs. Juvenile birds are browner than the adults and have darker, more contrasting flight feathers. The grey noddy is usually silent but has a soft, purring call.

Distribution

It occurs in subtropical and warm temperate waters of the south

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the contin ...

. The subspecies ''A. a. albivitta'' breeds on

Lord Howe Island Lord Howe Island (; formerly Lord Howe's Island) is an irregularly crescent-shaped volcanic remnant in the Tasman Sea between Australia and New Zealand, part of the Australian state of New South Wales. It lies directly east of mainland P ...

, Norfolk Island, northern

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 ...

(particularly the

) and southern

(on 'Ata and probably 'Eua). ''A. a. skottsbergii'' is found on Henderson Island,

Easter Island Easter Island ( rap, Rapa Nui; es, Isla de Pascua) is an island and special territory of Chile in the southeastern Pacific Ocean, at the southeasternmost point of the Polynesian Triangle in Oceania. The island is most famous for its ne ...

and

Sala y Gómez Sala or SALA may refer to: Places Europe * Sala, the historical name of the river IJssel and home of the Salii Franks * Sala (Estonian island), one of the Uhtju islands * Sala Baganza, a municipality in Emilia-Romagna, Italy * Sala Bolognese, a ...

. ''A. a. imitatrix'' breeds on the

Desventuradas Islands The Desventuradas Islands ( es, Islas Desventuradas, , "Unfortunate Islands" or ''Islas de los Desventurados'', "Islands of the Unfortunate Ones") is a group of four small oceanic islands located off the coast of Chile, northwest of Santiago in ...

off the coast of

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

. Some specimens have also been found in Australia, Pitcairn Islands, San Abrosio and San Feliz Islands and Ellice Islands.

Behaviour

It feeds in shallow water, not moving far from the breeding colonies. It gathers in large feeding flocks which can contain thousands of individuals. They feed by hovering over the water and dropping down to pick food from the surface.

Plankton Plankton are the diverse collection of organisms found in water (or air) that are unable to propel themselves against a current (or wind). The individual organisms constituting plankton are called plankters. In the ocean, they provide a crucia ...

forms the bulk of the diet and small

fish Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of ...

are also eaten. Breeding takes place in colonies on rocky islands. The

nest A nest is a structure built for certain animals to hold eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic materi ...

site is a sheltered rocky surface or underneath a boulder or clump of vegetation. A single

egg An egg is an organic vessel grown by an animal to carry a possibly fertilized egg cell (a zygote) and to incubate from it an embryo within the egg until the embryo has become an animal fetus that can survive on its own, at which point the a ...

is laid. It is whitish with dark markings and is incubated by both parents for about 32 days. The young birds are fed on regurgitated food and fledge after around 35 days.

References

*Heather, Barrie D. & Robertson, Hugh (1996) ''The Field Guide to the Birds of New Zealand'', Viking. *Jaramillo, Alvaro; Burke, Peter & Beadle, David (2003) ''Field Guide to the Birds of Chile'', Christopher Helm, London. *Pizzey, Graham & Knight, Frank (1997) ''The Graham Pizzey & Frank Knight Field Guide to the Birds of Australia'', HarperCollins, London. *Watling, Dick (2001) ''A Guide to the Birds of Fiji & Western Polynesia'', Environmental Consultants (Fiji), Suva. {{Taxonbar, from=Q62575749, from2=Q76502

grey noddy The grey noddy or grey ternlet (''Anous albivitta'') is a seabird belonging to the family Laridae. It was once regarded as a pale morph of the blue noddy (''Anous cerulea'') but is now usually considered to be a separate species. Taxonomy Th ...

Birds of the Pacific Ocean Birds of Chile Birds of the Kermadec Islands Birds of the Pitcairn Islands

Taxobox binomials not recognized by IUCN