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Cacatua (subgenus)
''Cacatua'' is a subgenus of the white cockatoos (genus ''Cacatua''). They are found in wooded habitats from Wallacea east to the Bismarck Archipelago and south to Australia. With the exception of the yellow-crested cockatoo, all are relatively large cockatoos with a total length of 45–55 cm (18–22 in). Their plumage is mainly white (tinged pinkish in the salmon-crested cockatoo), and the underwing and -tail have a yellowish tinge. Their crest is expressive and brightly coloured in most species. Unlike the members of the subgenus ''Licmetis'', the members of the subgenus ''Cacatua'' have a black bill. The sulphur-crested cockatoo is relatively widespread and can even be seen in suburban habitats in some parts of its range, but the remaining members of this subgenus all have relatively small distributions and are considered threatened by the IUCN due to a combination of habitat loss and capture for the wild bird trade. Species * Yellow-crested (or lesser sulphur-cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek grc, label=none, πλεῖστος, pleīstos, most and grc, label=none, καινός, kainós (latinized as ), 'new'. At the end of the preceding Pliocene, the previously isolated North and South American continents were joined by the Isthmus of Panama, causing Great American Interchang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suburban
A suburb (more broadly suburban area) is an area within a metropolitan area, which may include commercial and mixed-use, that is primarily a residential area. A suburb can exist either as part of a larger city/urban area or as a separate political entity. The name describes an area which is not as densely populated as an inner city, yet more densely populated than a rural area in the countryside. In many metropolitan areas, suburbs exist as separate residential communities within commuting distance of a city (cf "bedroom suburb".) Suburbs can have their own political or legal jurisdiction, especially in the United States, but this is not always the case, especially in the United Kingdom, where most suburbs are located within the administrative boundaries of cities. In most English-speaking countries, suburban areas are defined in contrast to central or inner city areas, but in Australian English and South African English, ''suburb'' has become largely synonymous with what ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cockatoos
A cockatoo is any of the 21 parrot species belonging to the family Cacatuidae, the only family in the superfamily Cacatuoidea. Along with the Psittacoidea (true parrots) and the Strigopoidea (large New Zealand parrots), they make up the order Psittaciformes. The family has a mainly Australasian distribution, ranging from the Philippines and the eastern Indonesian islands of Wallacea to New Guinea, the Solomon Islands and Australia. Cockatoos are recognisable by the prominent crests and curved bills. Their plumage is generally less colourful than that of other parrots, being mainly white, grey or black and often with coloured features in the crest, cheeks or tail. On average they are larger than other parrots; however, the cockatiel, the smallest cockatoo species, is a small bird. The phylogenetic position of the cockatiel remains unresolved, other than that it is one of the earliest offshoots of the cockatoo lineage. The remaining species are in two main clades. The five ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salmon-crested Cockatoo
The salmon-crested cockatoo (''Cacatua moluccensis''), also known as the Moluccan cockatoo, is a cockatoo endemic to the Seram archipelago in eastern Indonesia. At a height of up to and weight of up to , it is among the largest of the white cockatoos. The female is slightly smaller than the male on average. It has white-pink feathers with a definite peachy glow, a slight yellow on the underwing and underside of the tail feathers and a large retractable recumbent crest which it raises when threatened, revealing hitherto concealed bright red-orange plumes to frighten potential attackers. It may also be raised in excitement or in other 'emotional' displays. Some describe the crest as "flamingo-colored". It also has one of the louder calls in the parrot world and in captivity is a capable mimic. In the wild the salmon-crested cockatoo inhabits lowland forests below 1000 m. The diet consists mainly of seeds, nuts and fruit, as well as coconuts. There is additional evidence th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Cockatoo
The white cockatoo (''Cacatua alba''), also known as the umbrella cockatoo, is a medium-sized all-white cockatoo endemic to tropical rainforest on islands of Indonesia. When surprised, it extends a large and striking head crest, which has a semicircular shape (similar to an umbrella, hence the alternative name). The wings and tail have a pale yellow or lemon color which is exposed when they fly. It is similar to other species of white cockatoo such as yellow-crested cockatoo, sulphur-crested cockatoo, and salmon-crested cockatoo, all of which have yellow, orange or pink crest feathers instead of white. Names The white cockatoo is known as ''ayab'' (plural form: ''ayot'') in the Burmeso language of Papua, Indonesia. Taxonomy The white cockatoo was first described in 1776 by German zoologist Philipp Ludwig Statius Müller. Its species name ''alba'' is a feminine form of the Latin adjective ''albus'' for "white". It lies in the subgenus ''Cacatua'' within the genus ''Cacatua' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue-eyed Cockatoo
The blue-eyed cockatoo (''Cacatua ophthalmica'') is a large, mainly white cockatoo about long with a mobile crest, a black beak, and a light blue rim of featherless skin around each eye that gives this species its name. Like all cockatoos and many parrots, the blue-eyed cockatoo can use one of its zygodactyl feet to hold objects and to bring food to its beak whilst standing on the other foot. Among bird species as a whole, this is relatively unusual. Description The blue-eyed cockatoo is a large, about 50-cm-long, mainly white cockatoo with an erectile yellow and white crest, a black beak, dark grey legs, and a light blue rim of featherless skin around each eye, that gives this species its name. The sexes are very similar in appearance. Some males have dark brown irises and some females have reddish-brown irises, but this small difference is not always reliable as a gender indicator. The blue-eyed cockatoo is easily mistaken for the yellow-crested and sulphur-crested cockato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphur-crested Cockatoo
The sulphur-crested cockatoo (''Cacatua galerita'') is a relatively large white cockatoo found in wooded habitats in Australia, New Guinea, and some of the islands of Indonesia. They can be locally very numerous, leading to them sometimes being considered pests. A highly intelligent bird, they are well known in aviculture, although they can be demanding pets. Distribution In Australia, sulphur-crested cockatoos can be found widely in the north and east, ranging from the Kimberley to as far south as Tasmania, but avoiding arid inland areas with few trees. They are numerous in suburban habitats in cities such as Adelaide, Melbourne, Canberra, Sydney and Brisbane. Except for highland areas, they occur throughout most of New Guinea and on nearby smaller islands such as Waigeo, Misool and Aru, and various islands in the Cenderawasih Bay and Milne Bay. There are four recognised subspecies: Introduced species Within Australia, sulphur-crested cockatoos of the nominate race have also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow-crested Cockatoo
The yellow-crested cockatoo (''Cacatua sulphurea'') also known as the lesser sulphur-crested cockatoo, is a medium-sized (about 34-cm-long) cockatoo with white plumage, bluish-white bare orbital skin, grey feet, a black bill, and a retractile yellow or orange crest. The sexes are similar. The yellow-crested cockatoo is found in wooded and cultivated areas of East Timor and Indonesia's islands of Sulawesi and the Lesser Sundas. It is easily confused with the largerBirdLife Species Factsheet retrieved 10 February 2010 and more common , which has a more easterly distribution and can be distinguished b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby reducing biodiversity and species abundance. Habitat destruction is the leading cause of biodiversity loss. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as they are major threats to the survival of endangered species. Activities such as harvesting natural resources, industrial production and urbanization are human contributions to habitat destruction. Pressure from agriculture is the principal human cause. Some others include mining, logging, trawling, and urban sprawl. Habitat destruction is currently considered the primary cause of species extinction worldwide. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Threatened
Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensation'', a mathematical measure of biomass related to population growth rate. This quantitative metric is one method of evaluating the degree of endangerment. IUCN definition The International Union for Conservation of Nature (IUCN) is the foremost authority on threatened species, and treats threatened species not as a single category, but as a group of three categories, depending on the degree to which they are threatened: *Vulnerable species *Endangered species * Critically endangered species Less-than-threatened categories are near threatened, least concern, and the no longer assigned category of conservation dependent. Species which have not been evaluated (NE), or do not have sufficient data (data deficient) also are not considered "t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Licmetis
''Licmetis'' is a subgenus of the white cockatoos (genus ''Cacatua''). They are collectively known as corellas in Australia. Three of the six species are primarily – or only – found in Australia, while the Philippines, Indonesia, and the Solomons each have an endemic species. They are relatively small cockatoos and – unlike the members of the subgenus ''Cacatua'' – all have pale bills. While most show yellow-tinged underwings and some red to the face, none has conspicuously coloured crests. Species *Long-billed corella, ''Cacatua (Licmetis) tenuirostris'' *Western corella, ''Cacatua (Licmetis) pastinator'' **Muir's corella, ''Cacatua (Licmetis) pastinator pastinator'' **Butler's corella, ''Cacatua (Licmetis) pastinator butleri'' *Little corella, ''Cacatua (Licmetis) sanguinea'' *Red-vented cockatoo, ''Cacatua (Licmetis) haematuropygia'' *Tanimbar corella, ''Cacatua (Licmetis) goffiniana'' *Solomons cockatoo The Solomons cockatoo (''Cacatua ducorpsii''), also known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
