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Bucerotidae
Hornbills are birds found in tropical and subtropical Africa, Asia and Melanesia of the family Bucerotidae. They are characterized by a long, down-curved bill which is frequently brightly coloured and sometimes has a horny casque on the upper mandible. Hornbills have a two-lobed kidney. They are the only birds in which the first and second neck vertebrae (the atlas and axis respectively) are fused together; this probably provides a more stable platform for carrying the bill. The family is omnivorous, feeding on fruit and small animals. They are monogamous breeders nesting in natural cavities in trees and sometimes cliffs. A number of mainly insular species of hornbill with small ranges are threatened with extinction, mainly in Southeast Asia. In the Neotropical realm, toucans occupy the hornbills' ecological niche, an example of convergent evolution. Despite their close appearances, the two groups are not very closely related, with toucans being allied with the woodpeckers, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Hornbill
The great hornbill (''Buceros bicornis''), also known as the concave-casqued hornbill, great Indian hornbill or great pied hornbill, is one of the larger members of the hornbill family. It occurs in the Indian subcontinent and Southeast Asia. It is predominantly frugivorous, but also preys on small mammals, reptiles and birds. It has been listed as Vulnerable on the IUCN Red List since 2018. It is known to have lived for nearly 50 years in captivity. Due to its large size and colour, and importance in many tribal cultures and rituals, the Government of Kerala declared it as the official Kerala state bird. It is also the state bird of Arunachal Pradesh. Taxonomy The great hornbill was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae''. He placed it with the rhinoceros hornbill in the genus '' Buceros'' and coined the binomial name ''Buceros bicornis''. Linnaeus specified the location as China. The genus name is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Casque (anatomy)
A casque is an anatomical feature found in some species of birds, reptiles, and amphibians. In birds, it is an enlargement of the bones of the upper mandible or the skull, either on the front of the face, the top of the head, or both. The casque has been hypothesized to serve as a visual cue to a bird's sex, state of maturity, or social status; as reinforcement to the beak's structure; or as a resonance chamber, enhancing calls. In addition, they may be used in combat with other members of the same species, in the gathering of food, or in thermoregulation. Birds Structure Casques are found in a number of species, including most hornbills, all cassowaries, the maleo, the horned guan, the helmeted guineafowl and several species of curassow. In most of these species, the casque is a bony extension of the or skull that is covered with a cornified layer of skin. However, in cassowaries, a foamy, elastic layer of collagen sits between the bone and the skin. Hornbill casques grow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Ground Hornbill
The southern ground hornbill (''Bucorvus leadbeateri''; formerly known as ''Bucorvus cafer'') is one of two species of ground hornbill, both of which are found solely within Africa, and is the largest species in the hornbill order worldwide. It can be found in the southern regions of Africa, ranging from Kenya to South Africa. Within these regions, they inhabit both woodlands and savannas. The other species of the genus ''Bucorvus'' is the Abyssinian ground hornbill, ''B. abyssinicus''. Southern ground hornbills are carnivorous and hunt mostly on the ground. Their food ranges from insects to small vertebrates. Their nests are often found in high tree cavities or other shallow cavities, such as rock holes in cliff faces. These birds are a long-lived species, having lifespans in the range of 50–60 years, and up to 70 in captivity. In relation to their long lives, they do not reach sexual maturity until 4–6 years old, and begin breeding around 10 years old. Their sex can be ide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Dwarf Hornbill
The western dwarf hornbill (''Horizocerus hartlaubi'') is a species of hornbill in the family Bucerotidae. It is widely spread across the African tropical rainforest. It was formerly considered to be conspecific with the eastern dwarf hornbill (''Horizocerus granti'') with the English name "black dwarf hornbill". Taxonomy The western dwarf hornbill was formally described in 1861 by the English ornithologist John Gould based on a specimen from "Western Africa". Gould coined the binomial name ''Toccus hartlaubi''. The specific epithet was chosen to honour of the German ornithologist Gustav Hartlaub. This species was previously assigned to the genus ''Tockus'' but is now placed in the genus ''Horizocerus'' that was introduced in 1899 by the American ornithologist Harry C. Oberholser. The western dwarf hornbill was formerly considered to be conspecific Biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aceros Cassidix -Vogelpark Walsrode -pair-8a
The rufous-necked hornbill (''Aceros nipalensis'') is a species of hornbill in Bhutan, northeastern India, especially in Arunachal Pradesh, Indian Subcontinent and Southeast Asia. It is locally Local extinction, extinct in Nepal due to hunting and significant loss of habitat. There are less than 10,000 adults left in the wild. With a length of about , it is among the largest Bucerotinae, Bucerotine hornbills. The underparts, neck and head are pigmented as a rich rufous in the male, but black in the female. Taxonomy The scientific name ''Buceros nipalensis'' was coined for the rufous-necked hornbill by the English naturalist Brian Houghton Hodgson in 1829 who described several rufous-necked hornbills caught by hunters in Shorea robusta, sal forests in Nepal. The species was placed in the genus ''Aceros'' by Hodgson in 1844. The authorship of the genus name has sometimes been credited to John Edward Gray but Gray was the editor not the author of the list. The genus name is from A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ground Hornbill
The ground hornbills (Bucorvidae) are a family of the order Bucerotiformes, with a single genus ''Bucorvus'' and two extant species. The family is endemic to sub-Saharan Africa: the Abyssinian ground hornbill occurs in a belt from Senegal east to Ethiopia, and the southern ground hornbill occurs in southern and East Africa. Ground hornbills are large, with adults around a metre tall. Both species are ground-dwelling, unlike other hornbills. Also unlike most other hornbills, they are carnivorous and feed on insects, snakes, other birds, amphibians and even tortoises.Kinnaird Margaret F. and O‘Brien< Timothy G.; ''The Ecology and Conservation of Asian Hornbills: Farmers of the Forest''; pp. 20-23. They are among the longest-lived of all birds, and the larger southern species is possibly the slowest-breeding (triennially) and longest-lived of all birds. Taxonomy The genus ''Bucorvus'' was introduced, originally as a subgenus, by the French naturalist ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
N180 W1150
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N18 may refer to: Roads * N18 road (Belgium), a National Road of Belgium * Route nationale 18, in France * N18 road (Ireland) * A18 motorway (Netherlands) * N18 (South Africa) * Nebraska Highway 18, in the United States Other uses * BMW N18, an automobile engine * Chronic kidney disease * , a submarine of the Royal Navy * London Buses route N18 * Nissan Almera (N18), a Japanese automobile * Nitrogen-18, an isotope of nitrogen * Tinak Airport, on Arno Atoll, Marshall Islands * N18, a postcode district in the N postcode area The N (Northern) postcode area, also known as the London N postcode area, is the part of the London postal district, London post town covering part of North London, England. It is a group of 25 postcode districts which covers around 17,429 live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Niche
In ecology, a niche is the match of a species to a specific environmental condition. Three variants of ecological niche are described by It describes how an organism or population responds to the distribution of Resource (biology), resources and competitors (for example, by growing when resources are abundant, and when predators, parasites and pathogens are scarce) and how it in turn alters those same factors (for example, limiting access to resources by other organisms, acting as a food source for predators and a consumer of prey). "The type and number of variables comprising the dimensions of an environmental niche vary from one species to another [and] the relative importance of particular environmental variables for a species may vary according to the geographic and biotic contexts". See also Chapter 2: Concepts of niches, pp. 7 ''ff'' A Grinnellian niche is determined by the habitat in which a species lives and its accompanying Behavioral ecology, behavioral adaptations. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abyssinian Ground Hornbill
The Abyssinian ground hornbill or northern ground hornbill (''Bucorvus abyssinicus'') is an African bird, found north of the equator, and is one of two species of ground hornbill. It is the second largest species of African hornbill, only surpassed by the slightly larger southern ground hornbill. Taxonomy The Abyssinian ground hornbill was described by the French polymath Georges-Louis Leclerc, Comte de Buffon in 1780 in his ''Histoire Naturelle des Oiseaux''. The bird was also illustrated in a hand-coloured plate engraved by François-Nicolas Martinet in the ''Planches Enluminées D'Histoire Naturelle'' which was produced under the supervision of Edme-Louis Daubenton to accompany Buffon's text. Neither the plate caption nor Buffon's description included a scientific name but in 1783 the Dutch naturalist Pieter Boddaert coined the binomial name ''Buceros abyssinicus'' in his catalogue of the ''Planches Enluminées''. The type locality (biology), type locality is Ethiopia. The Aby ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood Hoopoe
The wood hoopoes or scimitarbills are a small African family, Phoeniculidae, of near passerine birds. They live south of the Sahara Desert and are not migratory. While the family is now restricted to Sub-Saharan Africa, fossil evidence shows that it once had a larger distribution. Fossils attributed to this family have been found in Miocene rocks in Germany. The wood hoopoes are related to the kingfishers, the rollers, and the hoopoe, forming a clade with this last according to Hackett ''et al.'' (2008). A close relationship between the hoopoe and the wood hoopoes is also supported by the shared and unique nature of their stapes. The wood hoopoes most resemble the true hoopoes with their long down-curved bills and short rounded wings. According to genetic studies, the two genera, ''Phoeniculus'' and ''Rhinopomastus'', appear to have diverged about ten million years ago, so some systematists treat them as separate subfamilies or even separate families. Description The wood hoop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
