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Udzungwa Partridge
The Udzungwa forest partridge (''Xenoperdix udzungwensis''), also known as the Udzungwa partridge, is a small, approximately long, boldly barred, brownish partridge with rufous face, grey underparts, olive-brown crown and upperparts. It has a red bill, brown iris and yellow legs. Both sexes are similar. Discovered only in 1991, this bird was first noticed as a pair of strange feet in a cooking pot in a Tanzanian forest camp. It inhabits and is endemic to forests of the Udzungwa Mountains in Tanzania. A second population from the Rubeho Mountains was initially believed to be a well-marked subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ..., but is now recognized to be specifically distinct.Bowie, Rauri C.K. & Fjeldså, Jon (2005): Genetic and morphological evidence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Partridge
A partridge is a medium-sized Galliformes, galliform bird in any of several genera, with a wide Indigenous (ecology), native distribution throughout parts of Europe, Asia and Africa. Several species have been introduced to the Americas. They are sometimes grouped in the Perdicinae subfamily of the Phasianidae (pheasants, quail, etc.). However, molecular research suggests that partridges are not a distinct taxon within the family Phasianidae, but that some species are closer to the pheasants, while others are closer to the junglefowl. Description Partridges are medium-sized Game (hunting), game birds, generally intermediate in size between the larger pheasants, smaller quail; they're ground-dwelling birds that feature variable plumage colouration across species, with most tending to grey and brown. Range and habitat Partridges are native to Europe, Asia, Africa, and the Middle East. Some species are found nesting on steppes or agricultural land, while other species prefer mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beak
The beak, bill, or rostrum is an external anatomical structure found mostly in birds, but also in turtles, non-avian dinosaurs and a few mammals. A beak is used for eating, preening, manipulating objects, killing prey, fighting, probing for food, courtship, and feeding young. The terms ''beak'' and ''rostrum'' are also used to refer to a similar mouth part in some ornithischians, pterosaurs, cetaceans, dicynodonts, anuran tadpoles, monotremes (i.e. echidnas and platypuses, which have a beak-like structure), sirens, pufferfish, billfishes and cephalopods. Although beaks vary significantly in size, shape, color and texture, they share a similar underlying structure. Two bony projections – the upper and lower mandibles – are covered with a thin keratinized layer of epidermis known as the rhamphotheca. In most species, two holes called ''nares'' lead to the respiratory system. Etymology Although the word "beak" was, in the past, generally restricted to the sharpened bills o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iris (anatomy)
In humans and most mammals and birds, the iris (plural: ''irides'' or ''irises'') is a thin, annular structure in the eye, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. Eye color is defined by the iris. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm. Structure The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, beneath the stroma, pigmented epithelial cells. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles ( dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds. The sphincter pupillae is the opposing muscle of the dilator pupillae. The pupil's diameter, and thus the inner border of the iris, changes size when constricting or dilating. The outer border of the iris does not change size. The constricti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism In Birds
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Udzungwa Mountains
The Udzungwa Mountains are a mountain range in south-central Tanzania. The mountains are mostly within Iringa Region, south of Tanzania's capital Dodoma. The Udzungwa Mountains are part of the Eastern Arc Mountains, and are home to a biodiverse community of flora and fauna with large numbers of endemic species. The mountains are home to the Hehe people, and the name Udzungwa comes from the Kihehe word “Wadzungwa", which means the people who live on mountainsides. Iringa is the largest settlement in the mountains, and the regional headquarters. Geography The Undzungwa Mountains cover an area of 16,131.40 km², the largest of the Eastern Arc ranges. The highest peak in the range is Luhombero at . The mountain range extends generally northeast-southwest. The Usangu Plain lies to the northwest, drained by the Great Ruaha River and its tributaries. The Great Ruaha River separates the Udzungwa Mountains from the Rubeho Mountains and Uvidunda Mountains to the northeast. The Kil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanzania
Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands and the Indian Ocean to the east; Mozambique and Malawi to the south; Zambia to the southwest; and Rwanda, Burundi, and the Democratic Republic of the Congo to the west. Mount Kilimanjaro, Africa's highest mountain, is in northeastern Tanzania. According to the United Nations, Tanzania has a population of million, making it the most populous country located entirely south of the equator. Many important hominid fossils have been found in Tanzania, such as 6-million-year-old Pliocene hominid fossils. The genus Australopithecus ranged across Africa between 4 and 2 million years ago, and the oldest remains of the genus ''Homo'' are found near Lake Olduvai. Following the rise of '' Homo erectus'' 1.8 million years ago, humanity spread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rubeho Mountains
The Rubeho Mountains are a mountain range in central Tanzania. The mountains in Dodoma and Morogoro regions, southeast of Tanzania's capital Dodoma. The Rubeho Mountains are part of the Eastern Arc Mountains, and are home to a biodiverse community of flora and fauna with large numbers of endemic species. Geography The Rubeho Mountains are a dissected plateau, covering an area of 4636 km².N. D. Burgess ''et al''. (2007). "The biological importance of the Eastern Arc Mountains of Tanzania and Kenya". ''Biological Conservation'' 134 (2007) pp. 209–231. The highest peaks in the range are Mangalisa (2,286 m), Mafwemiro (2,152 m) and Ledengombe (1,941 m).BirdLife International (2019) Important Bird Areas factsheet: Rubeho Mountains. Downloaded from http://www.birdlife.org on 12/09/2019. On the south, the steep-sided valley of the Great Ruaha River separates the Rubheho Mountains from the Udzungwa Mountains. On the southeast a narrow gap separates the Rubeho Mountains from Uvidu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beetle
Beetles are insects that form the order Coleoptera (), in the superorder Endopterygota. Their front pair of wings are hardened into wing-cases, elytra, distinguishing them from most other insects. The Coleoptera, with about 400,000 described species, is the largest of all orders, constituting almost 40% of described insects and 25% of all known animal life-forms; new species are discovered frequently, with estimates suggesting that there are between 0.9 and 2.1 million total species. Found in almost every habitat except the sea and the polar regions, they interact with their ecosystems in several ways: beetles often feed on plants and fungi, break down animal and plant debris, and eat other invertebrates. Some species are serious agricultural pests, such as the Colorado potato beetle, while others such as Coccinellidae (ladybirds or ladybugs) eat aphids, scale insects, thrips, and other plant-sucking insects that damage crops. Beetles typically have a particularly hard e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endangered
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 and invasive species. 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 considered when assessing the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenoperdix
Forest partridges (''Xenoperdix'' sp.) are partridges, described only in 1994, consists of two species of African partridges that are most closely related to Southeast Asian hill partridges. Both species have boldly barred plumage and a red bill. ''Xenoperdix'' are found only in forests of the Udzungwa Mountains and the Rubeho Highlands of Tanzania. While the genus was previously believed to be monotypic (only containing ''Xenoperdix udzungwensis''), the Rubeho population was recognized as a distinct species following a review of its molecular and morphological characteristics. Species * Rubeho forest partridge, ''Xenoperdix obscuratus'' * Udzungwa forest partridge The Udzungwa forest partridge (''Xenoperdix udzungwensis''), also known as the Udzungwa partridge, is a small, approximately long, boldly barred, brownish partridge with rufous face, grey underparts, olive-brown crown and upperparts. It has a red ..., ''Xenoperdix udzungwensis'' References Dinesen, L., Lehmberg, T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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