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Grey-breasted Parakeet
The grey-breasted parakeet (''Pyrrhura griseipectus'') is a species of parrot in the family Psittacidae. It is endemic to Ceará in north-eastern Brazil and restricted to a few mountains with relatively humid forest and woodland in a region otherwise dominated by arid Caatinga. They now only live in two locations, Serra do Baturité and Quixadá. Until recently, it was considered a subspecies of the white-eared parakeet, as ''Pyrrhura leucotis griseipectus''. The split was based on their widely disjunct distributions, differences in measurement of bill, and subtle differences in colour of crown, ear-coverts and chest. A recent study based on mtDNA has failed to confirm the status of the grey-breasted parakeet as a species distinct from the white-eared parakeet, while confirming the species status of Pfrimer's parakeet. After a decade of conservation efforts that included providing nest boxes, the population has seen a significant increase in size from less than 250 to upwards of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tommaso Salvadori
Count Adelardo Tommaso Salvadori Paleotti (30 September 1835 – 9 October 1923) was an Italian zoologist and ornithologist. Biography Salvadori was born in Porto San Giorgio, son of Count Luigi Salvadori and Ethelyn Welby, who was English. His brother Giorgio married their cousin Adele Emiliani (daughter of Giacomo Emiliani and Casson Adelaide Welby) and had five children (Charlie, Robbie, Minnie, Nellie and Guglielmo "Willie"). His nephew Guglielmo Salvadori Paleotti married Giacinta Galletti de Cadilhac (daughter of Arturo Galletti de Cadilhac and Margaret Collier) and had three children (Gladys, Massimo "Max" and Gioconda Beatrice "Joyce"). He studied medicine in Pisa and Rome and graduated in medicine at the University of Pisa. He participated in Garibaldi's military expedition in Sicily (the Expedition of the Thousand), serving as a medical officer. He was assistant in the Museum of Zoology in 1863, becoming Vice-Director of the Royal Museum of Natural History in Tur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disjunct Distribution
In biology, a taxon with a disjunct distribution is one that has two or more groups that are related but considerably separated from each other geographically. The causes are varied and might demonstrate either the expansion or contraction of a species' range. Range fragmentation Also called range fragmentation, disjunct distributions may be caused by changes in the environment, such as mountain building and continental drift or rising sea levels; it may also be due to an organism expanding its range into new areas, by such means as rafting, or other animals transporting an organism to a new location (plant seeds consumed by birds and animals can be moved to new locations during bird or animal migrations, and those seeds can be deposited in new locations in fecal matter). Other conditions that can produce disjunct distributions include: flooding, or changes in wind, stream, and current flows, plus others such as anthropogenic introduction of alien introduced species either acciden ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Birds Of Brazil
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 s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Caatinga
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. Birds ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrrhura
''Pyrrhura'' (Greek Red/Fire Tail) is a genus of parrots in the Arini tribe. They occur in tropical and subtropical South America and southern Central America (Panama and Costa Rica). Most are restricted to humid forest and adjacent habitats, but one species, the blaze-winged parakeet, prefers deciduous or gallery woodland, and another, the Pfrimer's parakeet, is restricted to dry regions. Some species are highly endangered. Depending on the species, the total length range from . All have long, pointed tails, a mainly green plumage, and a relatively narrow, dark greyish to white eye-ring. Many have scaly or barred chest-patterns and a whitish, pale grey, buff or reddish ear-patch. They typically move around in small, noisy flocks, flying swiftly at or below canopy level. Once settled in a tree they tend to be silent (especially if aware of danger) and difficult to spot. They nest in a tree-crevice. Some species are popular in aviculture, where they are commonly referred to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nest Box
A nest is a structure built for certain animals to hold eggs or young. Although nests are most closely associated with birds, members of all classes of vertebrates and some invertebrates construct nests. They may be composed of organic material such as twigs, grass, and leaves, or may be a simple depression in the ground, or a hole in a rock, tree, or building. Human-made materials, such as string, plastic, cloth, or paper, may also be used. Nests can be found in all types of habitat. Nest building is driven by a biological urge known as the nesting instinct in birds and mammals. Generally each species has a distinctive style of nest. Nest complexity is roughly correlated with the level of parental care by adults. Nest building is considered a key adaptive advantage among birds, and they exhibit the most variation in their nests ranging from simple holes in the ground to elaborate communal nests hosting hundreds of individuals. Nests of prairie dogs and several social insect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pfrimer's Parakeet
Pfrimer's parakeet (''Pyrrhura pfrimeri'') is a non-migratory species within the parrot family ''Psittacidae''. It also is known as Pfrimer's conure, Goias parakeet, and maroon-faced conure. The Pfrimer's parakeet has been qualified as endangered by the IUCN and BirdLife International since 2007. It is endemic to the Goiás and Tocantins regions of Brazil. It is mainly found within a belt of dry deciduous and semi-deciduous areas of the Caatinga forest.Handbook of the Birds of the World https://www.hbw.com/species/goias-parakeet-pyrrhura-pfrimeri It was considered a subspecies of the white-eared parakeet, as ''Pyrrhura leucotis pfrimeri''. The split was based on range, differences in habitat and distinctive differences in plumage (it is the only member of the P. leucotis complex where the pale patch on the ear-coverts is greatly reduced). A recent study based on mtDNA has confirmed its status as a distinct species. The population of Pfrimer's parakeet is currently decreasing, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MtDNA
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants and algae, also in plastids such as chloroplasts. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that the human mtDNA includes 16,569 base pairs and encodes 13 proteins. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits an examination of the relatedness of populations, and so has become important in anthropology and biogeography. Origin Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White-eared Parakeet
The white-eared parakeet or maroon-faced parakeet (''Pyrrhura leucotis'') is a small parrot belonging to the genus ''Pyrrhura''. As here defined, it is endemic to Atlantic Forest in eastern Brazil. The Venezuelan, grey-breasted and Pfrimer's parakeets were formerly classed as subspecies of this bird but are increasingly treated as separate species. Description It is 21–22 centimetres long. The plumage is mostly green. The chest has dark grey and whitish scaling on a green background, and the rump and belly are maroon. The face and throat are dark maroon, the forehead is bluish and there is a whitish ear-patch. The long, graduated tail has a red underside. The bird has a sharp call which is repeated three or four times. The grey-breasted parakeet is very similar but is proportionally larger-headed, has a longer bill with a deeper mandible, lacks blue to the forecrown (as do the occasional white-eared parakeet), and its breast is entirely scaled dark grey and whitish (little or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parrot
Parrots, also known as psittacines (), are birds of the roughly 398 species in 92 genera comprising the order Psittaciformes (), found mostly in tropical and subtropical regions. The order is subdivided into three superfamilies: the Psittacoidea ("true" parrots), the Cacatuoidea (cockatoos), and the Strigopoidea (New Zealand parrots). One-third of all parrot species are threatened by extinction, with higher aggregate extinction risk ( IUCN Red List Index) than any other comparable bird group. Parrots have a generally pantropical distribution with several species inhabiting temperate regions in the Southern Hemisphere, as well. The greatest diversity of parrots is in South America and Australasia. Characteristic features of parrots include a strong, curved bill, an upright stance, strong legs, and clawed zygodactyl feet. Many parrots are vividly coloured, and some are multi-coloured. Most parrots exhibit little or no sexual dimorphism in the visual spectrum. They form the most ... [...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] |
Quixadá
Quixadá is a municipality in the state of Ceará, in Brazil. It is known for its unusual rock formations, known locally as monoliths. Location Quixadá is located at around . It was founded in 1870 and had a population of 80,605 residents in 2010, according to the Brazilian census. It is the seat of the Roman Catholic Diocese of Quixadá. Pre-historic cave paintings and other archaeological remains have been found in the vicinity. The municipality contains the Quixadá Monoliths Natural Monument, a fully protected area around and containing the highly unusual inselbergs known locally as monoliths, which are of considerable tourist interest. The Barragem do Cedro (Cedar Dam) was built between 1890 and 1906 using stone masonry, cement and steel, at the foot of the Pedra da Galinha Choca (Brooding Hen Rock), the most famous of the monoliths. On 30 January 2015 the dam was placed on the tentative list as a UNESCO World Heritage Site. History Until the 1760s, the indigenous tribes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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