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Black-bellied Tern
The black-bellied tern (''Sterna acuticauda'') is a tern found near large rivers in the Indian subcontinent, its range extending from Pakistan, Nepal and India to Myanmar. It has become very scarce in the eastern part of its range and the International Union for Conservation of Nature has assessed its conservation status as being endangered. They have a black belly in the summer and a deep forked tail. They can sometimes resemble whiskered terns (''Chlidonias hybrida''), but the deeper fork of the tail and the black on the lower belly distinguish them from the shallow fork and black closer to the breast on the whiskered tern. Considering that sequence analysis supports moving the similar black-fronted tern (''"Sterna" albostriata'') into ''Chlidonias'', this species might also be better placed in that genus, but no research has yet been conducted. Description The black-bellied tern grows to a length of . In the breeding plumage, the crown and nape are black and the upper parts a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Edward Gray
John Edward Gray (12 February 1800 – 7 March 1875) was a British zoologist. He was the elder brother of zoologist George Robert Gray and son of the pharmacologist and botanist Samuel Frederick Gray (1766–1828). The same is used for a zoological name. Gray was keeper of zoology at the British Museum in London from 1840 until Christmas 1874, before the natural history holdings were split off to the Natural History Museum. He published several catalogues of the museum collections that included comprehensive discussions of animal groups and descriptions of new species. He improved the zoological collections to make them amongst the best in the world. Biography Gray was born in Walsall, but his family soon moved to London, where Gray studied medicine. He assisted his father in writing ''The Natural Arrangement of British Plants'' (1821). After being blackballed by the Linnean Society of London, Gray shifted his interest from botany to zoology. He began his zoological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status of the natural world and the measures needed to safeguard it. 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 partners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered Species
An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, invasive species, and climate change. The International Union for Conservation of Nature (IUCN) Red List lists the global conservation status of many species, and various other agencies assess the status of species within particular areas. Many nations have laws that protect conservation-reliant species which, for example, forbid hunting, restrict land development, or create protected areas. Some endangered species are the target of extensive conservation efforts such as captive breeding and habitat restoration. Human activity is a significant cause in causing some species to become endangered. Conservation status The conservation status of a species indicates the likelihood that it will become extinct. Multiple factors are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whiskered Tern
The whiskered tern (''Chlidonias hybrida'') is a tern in the family Laridae. The genus name is from Ancient Greek ''khelidonios'', "swallow-like", from ''khelidon'', "swallow". The specific ''hybridus'' is Latin for ''hybrid''; Peter Simon Pallas thought it might be a hybrid of white-winged black tern and common tern, writing "''Sterna fissipes 'Chlidonias leucopterus''et Hirundine 'Sterna hirundo''natam''". Subspecies This bird has a number of geographical races, differing mainly in size and minor plumage details. The tropical forms are resident, but European and Asian birds winter south to Africa and the Indian Subcontinent. A tagged whiskered tern was spotted at Manakudi Bird Sanctuary, Kanniyakumari District of Tamil Nadu, India in the month of April 2021.Two Tagged migratory birds spotted in salt pans in Manakudy bird reserve, The Hindu, Thiruchirappalli, Tamil Nadu Edition, India, pp4, 12.04.2021. thehindu.com This species breeds in colonies on inland marshes, someti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black-fronted Tern
The black-fronted tern (''Chlidonias albostriatus''), sea martin, ploughboy, or tarapiroe Māori language, (Māori), is a medium-small tern endemic to New Zealand. Black-fronted terns can be found in coastal habitats from the southern tip of the North Island to the eastern South Island as well as Stewart Island. Their breeding range is restricted to the South Island, where they will form breeding colonies on braided river islands. The species is globally and nationally endangered, due to its small and declining national population. Black-fronted terns are vulnerable to a range of threats, including predation by Invasive species in New Zealand, introduced mammals, habitat loss (land use changes and weed encroachment), resource abstraction (gravel and water), human disturbance, and Climate change in New Zealand, climate change. Taxonomy German naturalist Johann Reinhold Forster species description, described the black-fronted tern from a specimen collected at Queen Charlotte Soun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colony (biology)
In biology, a colony is composed of two or more Biological specificity#Conspecific, conspecific individuals living in close association with, or connected to, one another. This association is usually for mutual benefit such as stronger defense or the ability to attack bigger prey. Colonies can form in various shapes and ways depending on the organism involved. For instance, the bacterial colony is a cluster of identical cells (clones). These colonies often form and grow on the surface of (or within) a solid medium, usually derived from a single parent cell. Colonies, in the context of development, may be composed of two or more unitary (or solitary) organisms or be Modularity, modular organisms. Unitary organisms have determinate development (set life stages) from zygote to adult form and individuals or groups of individuals (colonies) are visually distinct. Modular organisms have indeterminate growth forms (life stages not set) through repeated iteration of genetically identi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Tern
The River Tern (also historically known as the Tearne) is a river in Shropshire, England. It rises north-east of Market Drayton in the north of the county. The source of the Tern is considered to be the lake in the grounds of Maer Hall, Staffordshire. From here it flows for about , being fed by the River Meese and the River Roden, until it joins the River Severn near Attingham Park, Atcham. Extensive peat bog formerly existed,Reported in 1838 by John Selby Prideaux and Sir William Jardine, "An attempt to ascertain the Fauna of Shropshire and North Wales", ''Magazine of Zoology and Botany'', vol. 2 (1838), p. 538. extending from Crudgington on the Tern as far as Newport. At Longdon-on-Tern, the Tern is spanned by the Longdon-on-Tern Aqueduct, the world's first large-scale cast iron navigable aqueduct ( Benjamin Outram's 13 m cast iron Holmes Aqueduct pre-dated it by a month), designed by Thomas Telford Thomas Telford (9 August 1757 – 2 September 1834) was a S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pratincole
The pratincoles or greywaders are a subfamily (Glareolinae) of birds which together with the coursers make up the family Glareolidae. They have short legs, very long pointed wings and long forked tails. Description Their most unusual feature for birds classed as wader 245px, A flock of Red_knot.html" ;"title="Dunlins and Red knot">Dunlins and Red knots Waders or shorebirds are birds of the order Charadriiformes commonly found wikt:wade#Etymology 1, wading along shorelines and mudflats in order to foraging, ...s is that they typically hunt their insect prey on the wing like hirundinidae, swallows, although they can also feed on the ground. Their short bills are an adaptation to aerial feeding. Their flight is fast and graceful like a swallow or a tern, with many twists and turns to pursue their prey. They are most active at dawn and dusk, resting in the warmest part of the day. Like the coursers, the pratincoles are found in warmer parts of the Old World, from southern Eur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Skimmer
The Indian skimmer or Indian scissors-bill (''Rynchops albicollis'') is one of the three species that belong to the skimmer genus ''Rynchops'' in the family Laridae. They are somewhat tern-like but like other skimmers, have a short upper mandible and the longer lower mandible that is ploughed along the surface of water as the bird flies over the water to pick aquatic prey. It is found in southern Asia, where it is patchily distributed and declining in numbers. They are mainly found in rivers or estuaries. They are very brightly marked in black, white and orange, making them difficult to miss. Description This bird has a black cap and orange bill that contrasts with the white body. With its long wings it looks tern-like and is about 40–43 cm long with a wingspan of 108 cm. The upper parts of the body are dark black and the underparts are white. The black cap on the head leaves the forehead and nape white. The wings are long and pointed with a white trailing edge. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sterna
''Sterna'' is a genus of terns in the bird family Laridae. The genus used to encompass most "white" terns indiscriminately, but mtDNA sequence comparisons have determined that this arrangement was paraphyletic. It is now restricted to the typical medium-sized white terns with deeply forked tails, which occur near-globally, mostly in coastal regions but several also using freshwater habitats inland.Bridge, E. S.; Jones, A. W. & Baker, A. J. (2005)A phylogenetic framework for the terns (Sternini) inferred from mtDNA sequences: implications for taxonomy and plumage evolution. ''Molecular Phylogenetics and Evolution'' 35: 459–469. Taxonomy The genus ''Sterna'' was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his ''Systema Naturae''. The type species is the common tern (''Sterna hirundo''). ''Sterna'' is derived from Old English "stearn" which appears in the poem '' The Seafarer''; a similar word was used to refer to terns by the Frisians ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Pakistan
This is a list of the bird species recorded in Pakistan. The avifauna of Pakistan include a total of 792 species. The Chukar partridge, chukar (''Alectoris chukar'') is the official List of national birds, national bird of Pakistan, and the shaheen falcon is the symbolic icon of the Pakistan Air Force and Pakistan Avicultural Foundation, one bird is endemic. This list's Taxonomy (biology), taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) generally follow the conventions of ''The Clements Checklist of Birds of the World'', 2022 edition. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Accidental species are included in the total species count for Pakistan. The following tags have been used to highlight several categories. The commonly occurring native species do not fall into any of these categories. *(V) Vagrancy (biology) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of India
This is a list of the bird species of India and includes Extant taxon, extant and recently extinct species recorded within the political limits of the Republic of India as defined by the Indian government. There have been 1393 species recorded as of 2025, of which 84 are Endemism in birds, endemic to the country. 98 species are globally threatened. The Indian peafowl (''Pavo cristatus'') is the national bird of India. This list does not cover species in Indian jurisdiction areas such as Dakshin Gangotri and oceanic species are delineated by an arbitrary cutoff distance. The list does not include fossil bird species or escapees from captivity. This list's Taxonomy (biology), taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of the IOC World Bird List, version 13.1. This list also uses British English throughout. Any bird names or other wording follows that convention. The following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
