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Adelaide And Mary River Floodplains Important Bird Area
The Adelaide and Mary River Floodplains are a region comprising the adjoining floodplains of the Adelaide and Mary Rivers in the Top End of Australia’s Northern Territory. It lies east of the city of Darwin and west of Kakadu National Park and the Alligator Rivers IBA, where the rivers flow northwards through seasonally inundated tropical lowlands into the Van Diemen Gulf. Birds The floodplains have been identified by BirdLife International as an Important Bird Area (IBA) because they support over 1% of the world populations of several species of waterbirds, including magpie geese (up to 800,000), wandering whistling ducks (188,000), pied herons (2000), red-necked avocets (3000), little curlews (12,000), Far Eastern curlews (1050), and sharp-tailed sandpipers (2500). There are large breeding colonies containing 30,000 mixed waterbirds, significant numbers of bush stone-curlews and 11 species that either have restricted ranges or are confined to savanna biome A biome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dendrocygna Arcuata
The wandering whistling duck (''Dendrocygna arcuata'') is a species of whistling duck. They inhabit tropical and subtropical Australia, the Philippines, Borneo, Indonesia, Papua New Guinea and the Pacific Islands. Taxonomy There are three subspecies associated with this bird, ''D. a. arcuata'' (Indonesian wandering whistling duck), ''D. a. australis'' (Australian wandering whistling duck), and ''D. a. pygmaea'' (New Britain wandering whistling duck). Description Formerly named tree ducks, the wandering whistling duck has its new name because of their loud whistling calls and the whistling noise their wings make during flight. They have long necks and legs and look like a cross between a goose and a duck. They have a strong head and neck with a darker crown and hindneck. The breast contains black spotting and the feathers are mostly dark brown. They range in size from 54–60 cm in height and weigh on average 750 grams. They mainly feed on grasses, waterlilies, water plants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Magpie Goose
The magpie goose (''Anseranas semipalmata'') is the sole living representative species of the family Anseranatidae. This common waterbird is found in northern Australia and southern New Guinea. As the species is prone to wandering, especially when not breeding, it is sometimes recorded outside its core range. The species was once also widespread in southern Australia but disappeared from there largely due to the drainage of the wetlands where the birds once bred. Due to their importance to Aboriginal people as a seasonal food source, as subjects of recreational hunting, and as a tourist attraction, their expansive and stable presence in northern Australia has been "ensured yprotective management". Description Magpie geese are unmistakable birds with their black and white plumage and yellowish legs. The feet are only partially webbed, and the magpie goose feeds on vegetable matter in the water, as well as on land. Males are larger than females. Unlike true geese, their molt is gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Important Bird Areas Of The Northern Territory
Importance is a property of entities that matter or make a difference. For example, World War II was an important event and Albert Einstein was an important person because of how they affected the world. There are disagreements in the academic literature about what type of difference is required. According to the causal impact view, something is important if it has a big causal impact on the world. This view is rejected by various theorists, who insist that an additional aspect is required: that the impact in question makes a value difference. This is often understood in terms of how the important thing affects the well-being of people. So on this view, World War II was important, not just because it brought about many wide-ranging changes but because these changes had severe negative impacts on the well-being of the people involved. The difference in question is usually understood counterfactually as the contrast between how the world actually is and how the world would have be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of The Northern Territory
This is a list of rivers of Australia. Rivers are ordered alphabetically, by state. The same river may be found in more than one state as many rivers cross state borders. Longest rivers nationally Longest river by state or territory Although the Murray River forms much of the border separating New South Wales and Victoria, it is not Victoria's longest river because the New South Wales border is delineated by the river's southern bank rather than by the middle of the river. The only section of the river formally within Victoria is a stretch of approximately where it separates Victoria and South Australia. At this point, the middle of the river forms the border. Rivers by state or territory The following is a list of rivers located within Australian states and territories. Where a river crosses a state or territory boundary, it is listed in both states and territories. Where a river has a name that includes the word creek, it has been officially designated as a river. Aus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biome
A biome () is a biogeographical unit consisting of a biological community that has formed in response to the physical environment in which they are found and a shared regional climate. Biomes may span more than one continent. Biome is a broader term than habitat and can comprise a variety of habitats. While a biome can cover large areas, a microbiome is a mix of organisms that coexist in a defined space on a much smaller scale. For example, the human microbiome is the collection of bacteria, viruses, and other microorganisms that are present on or in a human body. A biota is the total collection of organisms of a geographic region or a time period, from local geographic scales and instantaneous temporal scales all the way up to whole-planet and whole-timescale spatiotemporal scales. The biotas of the Earth make up the biosphere. Etymology The term was suggested in 1916 by Clements, originally as a synonym for '' biotic community'' of Möbius (1877). Later, it gained its c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. According to '' Britannica'', there exists four savanna forms; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bush Stone-curlew
The bush stone-curlew or bush thick-knee, also known as the Iben bird (''Burhinus grallarius'', obsolete name ''Burhinus magnirostris'') is a large, ground-dwelling bird endemic to Australia. Its favoured habitat is open plains and woodlands, where it stalks slowly at night in search of invertebrates such as insects. Its grey-brown coloration is distinguished by dark streaks, its eyes are large and legs are long. It is capable of flight, but relies on the camouflage of its plumage to evade detection during the day; the bush curlew adopts a rigid posture when it becomes aware of an observer. Both sexes care for two eggs laid on the bare ground, usually sited near bush in a shaded position or next to a fallen branch. Taxonomy The bush stone-curlew was first described by English ornithologist John Latham in 1801 under the binomial name ''Charadius grallarius''. Latham published three names simultaneously; however, the seniority of ''C. grallarius'' follows the publication of the nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sharp-tailed Sandpiper
The sharp-tailed sandpiper (''Calidris acuminata'') (but see below) is a small wader. Taxonomy A review of data has indicated that this bird should perhaps better be placed into the genus ''Philomachus'' – as ''P. acuminatus'' – which now contains only the ruff but if the sharp-tailed sandpiper is merged into it would need to accommodate the broad-billed sandpiper. While the latter is a peculiar calidrid, the sharp-tailed sandpiper is much more similar to other ''Calidris''/''Erolia'' species such as the pectoral sandpiper. On the one hand, its larger size and long-legged stance, and the breast pattern which gradually fades away on the belly as in the ruff instead of having a fairly sharp border as in the ''Calidris''/''Erolia'' stints indicate that placement in ''Philomachus'' may be correct. Still, it is just as possible that – given the fairly common instances of hybridization in calidrines – mitochondrial DNA data has given a false picture of this species' true af ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Far Eastern Curlew
The Far Eastern curlew (''Numenius madagascariensis'') is a large shorebird most similar in appearance to the long-billed curlew, but slightly larger. It is mostly brown in color, differentiated from other curlews by its plain, unpatterned brown underwing. It is not only the largest curlew but probably the world's largest sandpiper, at in length and across the wings. The body is reportedly , which may be equaled by the Eurasian curlew.''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), . The extremely long bill, at in length, rivals the bill size of the closely related long-billed curlew as the longest bill for a sandpiper. Distribution and habitat The Far Eastern curlew spends its breeding season in northeastern Asia, including Siberia to Kamchatka, and Mongolia. Its breeding habitat is composed of marshy and swampy wetlands and lakeshores. Most individuals winter in coastal Australia, with a few heading to South Korea, Thailand, Phili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Curlew
The little curlew (''Numenius minutus'') is a wader in the large bird family Scolopacidae. It is a very small curlew, which breeds in the far north of Siberia. It is closely related to the North American Eskimo curlew. The word "curlew" is imitative of the Eurasian curlew's call, but may have been influenced by the Old French ''corliu'', "messenger", from ''courir '', "to run". It was first recorded in 1377 in Langland's Piers Plowman. The genus name ''Numenius'' is from Ancient Greek ''noumenios'', a bird mentioned by Hesychius. It is associated with the curlews because it appears to be derived from ''neos'', "new", and ''mene'', "moon", referring to the crescent-shaped bill. The species name is from Latin ''minutus'', "small". This is a strongly migratory species, wintering in Australasia. It is a very rare vagrant to western Europe, including once in Blankenberge, Belgium, in September 2010. In the winter of 2019/2020 a bird was seen in The Netherlands. This bird bree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-necked Avocet
The red-necked avocet (''Recurvirostra novaehollandiae'') also known as the Australian avocet, cobbler, cobbler's awl, and painted lady, is a wader of the family Recurvirostridae that is endemic to Australia and is fairly common and widespread throughout, except for the north and north east coastal areas of the country. Closely related to the stilts, it shares their fragile slender elegance, however the deep red head and neck distinguish them. It appeared on a 13 cent postage stamp in 1966. Taxonomy The French naturalist Louis Jean Pierre Vieillot described the red-necked avocet in 1816, and it still bears its original name. It is one of four species of avocet that make up the genus ''Recurvirostra''. A 2004 study combining genetics and morphology showed that it was the sister taxon to a lineage that gave rise to the Andean and American avocets. Description The distinguishing feature of the red-necked avocet, and all avocet species, is the distinctive upcurved bill that is used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pied Heron
The pied heron (''Egretta picata''), also known as the pied egret is a bird found in coastal and subcoastal areas of monsoonal northern Australia as well as some parts of Wallacea and New Guinea. Taxonomy The species was originally described by ornithologist John Gould in 1845. Recent taxonomists put this species in the genus '' Egretta''. There are no recognised subspecies. Description It is a small heron, 43–55 cm long, with dark slaty wings, body, and crested head, with a white throat and neck. The appearance is similar to the white-necked heron. Males (247–280 g) are heavier than females (225–242 g), but the two are similar in appearance. Immature birds lack the crest as well as the dark colouring on the head and may look like small versions of the white-necked heron. The juveniles were once classified as a separate species. Distribution and habitat Its habitat mainly comprises a range of wetlands and wet grasslands. Behaviour Call The call of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_-_Fogg_Dam_-_Middle_Point_-_Northern_Territory_-_Australia.jpg "Click for more on -> Pied Heron")