Island thrush | |
---|---|
![]() | |
T. p. vitiensis, Fiji | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Turdidae |
Genus: | Turdus |
Species: | T. poliocephalus |
Binomial name | |
Turdus poliocephalus Latham, 1801 | |
Subspecies | |
See text |
The island thrush (Turdus poliocephalus) is a common forest bird in the thrush family. Almost 50 subspecies have been described, ranging from South East Asia and Melanesia, to Samoa, exhibiting great differences in plumage. Several subspecies are threatened and three have already become extinct.
The island thrush is a member of the cosmopolitan genus Turdus (Linnaeus, 1758), one of the most widely distributed bird genera in the world. The taxonomy of the island thrush is complex, and has defied attempts to split the group based on the four suspected morphological types. There are also thought to be at least two further subspecies not yet described scientifically, both from the Indonesian island of Sulawesi.
The list below is sorted alphabetically. [2] [3]
The Taiwan thrush (T. niveiceps) was formerly also classified as a subspecies, but more recent studies indicate that it is a distinct species that is not within the island thrush complex. [4]
The island thrush is widely but patchily distributed across its range. It is present on islands in Samoa, Fiji, Vanuatu, New Caledonia, the Solomon Islands, New Guinea and surrounding islands, many Indonesian islands, and the Philippines. However, it is restricted to areas with bird communities of less than 25–35 species. On the larger islands (like Borneo or New Guinea) this means that it is only found at high altitudes, above 2750 m. Smaller islands can only support much smaller bird communities, and on these the island thrush may be found at lower altitudes. Two or more subspecies may exist on some islands, segregated into different habitats. The ranges of many subspecies may be as small as a single island—for example the Kadavu subspecies T. p. ruficeps.
The 49 subspecies of island thrush vary dramatically in appearance, but almost all resemble a typical Turdus thrush and have a yellow bill, eye-ring and legs. The Samoan subspecies, T. p. samoensis, is identical in appearance to the blackbird (Turdus merula), whereas T. p. seebohmi of northern Borneo is dark above with a red breast and resembles the American robin (Turdus migratorius). Some subspecies have an entirely white head (including the male T. p. niveiceps, but not the female), and the Kadavu form T. p. ruficeps has an entirely orange head.
The island thrush has a very catholic diet, taking a range of invertebrates such as insects (mostly beetles), spiders, snails, earthworms, as well as carrion and even small reptiles. It will also take fruit and seeds, depending on what is locally available. Its foraging technique is described as similar to that of the blackbird, investigating the leaf litter and low branches in dense cover, but in some places will also forage in the canopy.
Most island thrushes breed in discrete two- to three-month seasons (the precise timing varies depending on location), although the birds in Fiji nest from June until January. They nest in a well-constructed cup well hidden in dense vegetation, laying from one to three eggs.
As a species the island thrush is not threatened and many subspecies are locally very common. However, several subspecies are threatened, and T. p. erythropleurus is considered critically so. This subspecies is found on Christmas Island, and is threatened by the introduced yellow crazy ant, which is capable of killing nestlings. Several other subspecies have declining ranges, including T. p. samoensis from Samoa, and T. p. xanthopus from New Caledonia, which is now extinct from Grande Terre and is restricted to 100 individuals surviving only on Yande and Neba.
Three subspecies have become extinct: T. p. vinitinctus from Lord Howe Island, T. p. mareensis from the Loyalty Islands and the nominate race T. p. poliocephalus from Norfolk Island. T. p. poliocephalus was relatively common as recently as 1941, but by 1975 it had become extinct, due to introduced black rats, habitat loss and hybridization following colonisation by the closely related common blackbird.
The Solomon Islands men's national football team is the national football team of Solomon Islands, administered by the Solomon Islands Football Federation. The Solomon Islands national football team was founded in 1978. They were officially recognised by FIFA a decade later, in 1988.
The buff-banded rail is a distinctively coloured, highly dispersive, medium-sized rail of the rail family, Rallidae. This species comprises several subspecies found throughout much of Australasia and the south-west Pacific region, including the Philippines, New Guinea, Australia, New Zealand, and numerous smaller islands, covering a range of latitudes from the tropics to the subantarctic.
The Lord Howe thrush, also known as the vinous-tinted thrush or vinous-tinted blackbird, is an extinct subspecies of the island thrush. It was endemic to Lord Howe Island, an Australian island in the Tasman Sea, where it was also called the doctor bird or ouzel by the islanders.
Barringtonia is a genus of flowering plants in the family Lecythidaceae first described as a genus with this name in 1775. It is native to Africa, southern Asia, Australia, and various islands of the Pacific and Indian Oceans. The genus name commemorates Daines Barrington.
The Polynesian starling is a species of starling of the family Sturnidae. It is found in the Samoan Islands, Fiji, Niue, Tonga, the Santa Cruz Islands and Wallis and Futuna. Its natural habitats are subtropical or tropical dry forests and tropical moist forests. Various subspecies exist throughout this wide range, some darker in coloration and some lighter. Its call is a raspy buzz or rattle. Diet is fruit and insects.
The white-browed crake is a species of bird in the family Rallidae. It is found in Australia, Brunei, Cambodia, Fiji, Hong Kong, Indonesia, Japan, India, Malaysia, Micronesia, New Caledonia, Palau, Papua New Guinea, the Philippines, Samoa, Singapore, Solomon Islands, Thailand, and Vanuatu.
The Fiji shrikebill is a songbird species in the family Monarchidae. It is found in American Samoa, Fiji, and Tonga. Its natural habitat is subtropical or tropical moist lowland forests.
The cardinal myzomela is a species of bird in the honeyeater family Meliphagidae. It is named for the scarlet color of the male. It is found in American Samoa, New Caledonia, Samoa, Solomon Islands, and Vanuatu, as well as some islands in Micronesia such as Yap. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mangrove forest. It frequents areas with flowers, such as gardens. This is a small, active bird, measuring about 13 cm (5.1 in) from bill to tail. Males are red and black in coloration, females are grayish-olive, sometimes with a red cap or red head. Its long, curved bill is especially adapted for reaching into flowers for nectar. Cardinal myzomela populations have vanished from the island of Guam since the invasion of the brown tree snake.
The Australasian swamphen is a species of swamphen (Porphyrio) occurring in eastern Indonesia, Papua New Guinea, Australia and New Zealand. In New Zealand, it is known as the pūkeko. The species used to be considered a subspecies of the purple swamphen.
The Fiji whistler is a species of bird in the family Pachycephalidae, endemic to Fiji.
The Norfolk thrush, also known as the grey-headed blackbird or guava bird, was a bird in the thrush family endemic to Norfolk Island, an Australian territory in the Tasman Sea. It is the extinct nominate subspecies of the island thrush.
The following outline is provided as an overview and topical guide to Oceania.
Hernandia is a genus of flowering plants in the family Hernandiaceae. It was named after the Spanish botanist Francisco Hernández de Toledo.
The 2011 OFC U-17 Championship, was the OFC Under 17 Qualifying Tournament, the biennial football championship of Oceania (OFC). It was the 14th edition of the tournament and was held in Albany, North Shore City, New Zealand from 8 to 19 January 2011. New Zealand qualified for the 2011 FIFA U-17 World Cup, in Mexico.
The Pacific kingfisher is a medium-sized kingfisher belonging to the subfamily Halcyoninae, the tree kingfishers. It has a wide range throughout the South Pacific islands. It was previously considered a subspecies of the collared kingfisher.
The following is a list of all reported tropical cyclones within the South Pacific Ocean, to the east of 160°E, before 1900.
Tolokiwa Island, also known as Lottin Island, is an island in the Bismarck Sea. The island is volcanic in origin and part of the Bismarck Archipelago.