Topgallant Islands
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Topgallant Islands
Topgallant Islands is an island group in the Australian state of South Australia located in the Investigator Group about south west of Cape Finniss on the west coast of Eyre Peninsula. The group was discovered and named by Matthew Flinders on 13 February 1802. The island group has enjoyed protected area status since the 1960s and since 2011, it has been part of the Investigator Group Wilderness Protection Area. Description Topgallant Islands is an island group located about south west of Cape Finniss on the west coast of Eyre Peninsula in South Australia, about west by south of the town of Elliston and about east of Flinders Island.DMH, 1985, chart 38 The group consists of an islet and a number of bare rocks which are numbered at seven in one source and which extend from the islet in a line for a distance of about to the south east. The islet which has an area of about , is encircled by high cliffs and has a rounded top whose summit is at above sea level. The south ...
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Great Australian Bight
The Great Australian Bight is a large oceanic bight, or open bay, off the central and western portions of the southern coastline of mainland Australia. Extent Two definitions of the extent are in use – one used by the International Hydrographic Organization (IHO) and the other used by the Australian Hydrographic Service (AHS). The IHO defines the Great Australian Bight as having the following limits: ''On the North.'' The south coast of the Australian mainland. ''On the South.'' A line joining West Cape Howe () Australia to South West Cape, Tasmania. ''On the East.'' A line from Cape Otway, Victoria to King Island and thence to Cape Grim, the northwest extreme of Tasmania. The AHS defines the bight with a smaller area, from Cape Pasley, Western Australia, to Cape Carnot, South Australia - a distance of . Much of the bight lies due south of the expansive Nullarbor Plain, which straddles South Australia and Western Australia. The Eyre Highway passes close to the cli ...
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Nitraria Billardierei
''Nitraria billardierei'', commonly known as nitre bush or dillon bush, is a perennial shrub native to Australia. It is often found in saline areas or other areas which have been disturbed. This species produces flowers predominantly in spring, with small ovoid or oblong fruit (drupe) that are purple, red or golden. The fruit are edible, said to taste like salty grapes. They were eaten, sometimes whole, including the stone, by indigenous Australians such as the Wemba-Wemba. Fruit can also be made into jam or dried and stored. It is a broad and low shrub, up to high and 4 m wide. Nitre bush is found across all mainland states of Australia. The plant's spread and germination in areas of heavy clay soil is assisted by the fruit's consumption by emu The emu () (''Dromaius novaehollandiae'') is the second-tallest living bird after its ratite relative the ostrich. It is endemic to Australia where it is the largest native bird and the only extant member of the genus ''D ...
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Rock Parrot
The rock parrot (''Neophema petrophila'') is a species of grass parrot native to Australia. Described by John Gould in 1841, it is a small parrot long and weighing with predominantly olive-brown upperparts and more yellowish underparts. Its head is olive with light blue forecheeks and lores, and a dark blue frontal band line across the crown with lighter blue above and below. The sexes are similar in appearance, although the female tends to have a duller frontal band and less blue on the face. Two subspecies are recognised. Rocky islands and coastal dune areas are the preferred habitats for this species, which is found from Lake Alexandrina in southeastern South Australia westwards across coastal South and Western Australia to Shark Bay. Unlike other grass parrots, it nests in burrows or rocky crevices mostly on offshore islands such as Rottnest Island. Seeds of grasses and succulent plants form the bulk of its diet. The species has suffered in the face of feral mammals; a ...
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Silver Gull
The silver gull (''Chroicocephalus novaehollandiae'') is the most common gull of Australia. It has been found throughout the continent, but particularly at or near coastal areas. It is smaller than the Pacific gull (''Larus pacificus''), which also lives in Australia. The silver gull should not be confused with the herring gull, which is called "silver gull" in many other languages (scientific name ''Larus argentatus'', German ''Silbermöwe'', French ''Goéland argenté'', Dutch ''zilvermeeuw''), but is a much larger, robust gull with no overlap in range. Taxonomy It has traditionally been placed in the genus ''Larus'', as is the case with many gulls, but is now placed in the genus ''Chroicocephalus''. Hartlaub's gull (''C. hartlaubii'') of South Africa was formerly sometimes considered to be subspecies of the silver gull. There are three subspecies: * ''C. n. forsteri'' ( Mathews, 1912) – north and northeast Australia, New Caledonia, Loyalty Islands * ''C. n. novaehollan ...
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Welcome Swallow
The welcome swallow (''Hirundo neoxena'') is a small passerine bird in the swallow family. It is a species native to Australia and nearby islands, and self-introduced into New Zealand in the middle of the twentieth century. It is very similar to the Pacific swallow with which it is often considered conspecific. This species breeds in southern and eastern Australia in a variety of habitats, mostly in open areas, man-made clearings or urban environments, but not desert or dense forest. Eastern populations are largely migratory, wintering in northern Australia. Western birds and those in New Zealand are mainly sedentary. Taxonomy The welcome swallow was first described by John Gould in ''The Birds of Australia'' as a member of the genus ''Hirundo'', but the first publication is often incorrectly given as in the ''Proceedings of the Zoological Society of London''. Both its species name and common name refer to people welcoming its return as a herald of spring in southern parts of ...
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White-bellied Sea-eagle
The white-bellied sea eagle (''Haliaeetus leucogaster''), also known as the white-breasted sea eagle, is a large diurnal bird of prey in the family Accipitridae. Originally described by Johann Friedrich Gmelin in 1788, it is closely related to Sanford's sea eagle of the Solomon Islands, and the two are considered a superspecies. A distinctive bird, the adult white-bellied sea eagle has a white head, breast, under-wing coverts and tail. The upper parts are grey and the black under-wing flight feathers contrast with the white coverts. The tail is short and wedge-shaped as in all ''Haliaeetus'' species. Like many raptors, the female is slightly larger than the male, and can measure up to long with a wingspan of up to , and weigh . Immature birds have brown plumage, which is gradually replaced by white until the age of five or six years. The call is a loud goose-like honking. Resident from India and Sri Lanka through Southeast Asia to Australia on coasts and major waterways, the ...
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Nankeen Kestrel
The nankeen kestrel (''Falco cenchroides''), also known as the Australian kestrel, is a raptor native to Australia and New Guinea. It is one of the smallest falcons, and unlike many, does not rely on speed to catch its prey. Instead, it simply perches in an exposed position, but it also has a distinctive technique of hovering over crop and grasslands. Taxonomy The nankeen kestrel is a species of the genus ''Falco'', allied to a subgenus ''Tinnunculus''. They were first described by Nicholas Vigors and Thomas Horsfield in 1827. Further descriptions — regarded as synonyms for the species — were published: ''Cerchneis immaculata'' Brehm, 1845; the later name ''Cerchneis unicolor'' by Alexander Milligan was published in ''Emu'' in 1904; and that author's name appearing in the assignment to a subspecies, ''Cerchneis cenchroides milligani'', published by Gregory Mathews in 1912. The generic name is Late Latin ''falco'' 'falcon' (from ''falx'' ''falcis'', 'sickle') and the speci ...
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White-faced Heron
The white-faced heron (''Egretta novaehollandiae'') also known as the white-fronted heron, and incorrectly as the grey heron, or blue crane, is a common bird throughout most of Australasia, including New Guinea, the islands of Torres Strait, Indonesia, New Zealand, and all but the driest areas of Australia. It is a medium-sized heron, pale, slightly bluish-grey, with yellow legs and white facial markings. It can be found almost anywhere near shallow water, fresh or salt, and although it is prompt to depart the scene on long, slow-beating wings if disturbed, it will boldly raid suburban fish ponds. Taxonomy The species was originally described by ornithologist John Latham in 1790. It was historically considered to be closely related to '' Ardea'' but for some time it was placed in its own genus—''Notophoyx''—because of the absence of the plumes typical in that genus. In his review of the family Ardeidae, American ornithologist Walter J. Bock placed the white-faced heron in ...
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Richard's Pipit
Richard's pipit (''Anthus richardi'') is a medium-sized passerine bird which breeds in open grasslands in the East Palearctic. It is a long-distance migrant moving to open lowlands in the Indian subcontinent and Southeast Asia. It is a rare but regular vagrant to western Europe. The genus name ''Anthus'' is the Latin name for a small bird of grasslands. The English name and ''richardi'' are for the French naturalist Charles Richard (1745–1835), director of postal services at Lunéville and friend of Francois Levaillant. It belongs to the pipit genus ''Anthus'' in the family Motacillidae. It was formerly lumped together with the Australasian, African, mountain and paddyfield pipits in a single species: Richard's pipit, ''Anthus novaeseelandiae''. These pipits are now commonly considered to be separate species although the African and paddyfield pipits are sometimes treated as part of ''A. richardi''. Description This is a large pipit, 17–20 cm in length, with a weigh ...
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Bird
Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in size from the bee hummingbird to the ostrich. There are about ten thousand living species, more than half of which are passerine, or "perching" birds. Birds have whose development varies according to species; the only known groups without wings are the extinct moa and elephant birds. Wings, which are modified forelimbs, gave birds the ability to fly, although further evolution has led to the loss of flight in some birds, including ratites, penguins, and diverse endemic island species. The digestive and respiratory systems of birds are also uniquely adapted for flight. Some bird species of aquatic environments, particularly seabirds and some waterbirds, have further evolved for swimming. B ...
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Marbled Gecko
''Christinus'' is a genus of Gekkonidae geckos found in southern regions of Australia. It contains species and subspecies that are regionally termed as marbled geckos. The contrasted patterns of these geckos, marbling, are found in a variety of reddish-brown, grey, silver, white, black and purplish hues. They are frequently found in old knotted trees and sometimes congregate in large numbers in established urban environments. The genus was named for Christine Biggs, a friend of one of the authors. Classification ''Christinus'' was first described by Wells and Wellington in 1984, giving the types species as that published as ''Diplodactylus marmoratus'' Gray 1845. Their later proposal to establish a genus '' Ridegekko'', based on Boulenger's original description of ''Phyllodactylus guentheri'' (''C. guentheri''), is not given in later literature. The genus has been described as containing two species, the island population and the widespread southern population. The latter, ' ...
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Vertebrate
Vertebrates () comprise all animal taxa within the subphylum Vertebrata () ( chordates with backbones), including all mammals, birds, reptiles, amphibians, and fish. Vertebrates represent the overwhelming majority of the phylum Chordata, with currently about 69,963 species described. Vertebrates comprise such groups as the following: * jawless fish, which include hagfish and lampreys * jawed vertebrates, which include: ** cartilaginous fish (sharks, rays, and ratfish) ** bony vertebrates, which include: *** ray-fins (the majority of living bony fish) *** lobe-fins, which include: **** coelacanths and lungfish **** tetrapods (limbed vertebrates) Extant vertebrates range in size from the frog species ''Paedophryne amauensis'', at as little as , to the blue whale, at up to . Vertebrates make up less than five percent of all described animal species; the rest are invertebrates, which lack vertebral columns. The vertebrates traditionally include the hagfish, which do no ...
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