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Santarém Parakeet
The Santarém parakeet (''Pyrrhura amazonum''), also known as Hellmayr's parakeet or in aviculture as Hellmayr's conure or the Santarém conure, is a species of parrot in the family Psittacidae. It is found in the eastern and central sections of the Amazon basin south of the Amazon River, only just extending onto the northern bank of this river. Taxonomy There are three subspecies recognized by the International Ornithological Congress: * ''P. a. amazonum'' Hellmayr, 1906 - north of the Amazon River between Monte Alegre and Obidos, south of the Amazon between the Tapajós and Tocantins rivers * ''P. a. pallescens'' Miranda-Ribeiro, 1926 (previously ''P. a. snethlageae'') - Madeira River basin in southwest Brazil and northern Bolivia * ''P. a. lucida'' Arndt, 2008 - in the vicinity of the Teles Pires and Cristalino Rivers, in Mato Grosso It has typically been considered a subspecies of the painted parakeet. While reviewing this group, Joseph (2002) discovered that an undesc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Eduard Hellmayr
Carl Eduard Hellmayr (29 January 1878 – 24 February 1944) was an Austrian ornithologist. Biography Hellmayr was born in Vienna and studied at the University of Vienna, although he did not complete his degree. After his studies he worked in Vienna, Munich, Berlin, Paris, Tring (England), and Chicago. He spent the years 1905–1908 studying Baron Rothschild's private collection of natural history specimens at Tring, near London. There he received guidance from the German ornithologist Ernst Hartert. In 1908, Hellmayr was appointed Curator of the Bird Department at the Bavarian State Museum, which he had helped organize in 1903 and where he became a specialist in Neotropical birds, studying Johann Baptist von Spix's collection of Brazilian birds. In 1922, he was made Curator in Zoology at the Field Museum in Chicago. He stayed there until 1931. His books included 13 of the 15 volumes of the ''Catalogue of Birds of the Americas'' (1918–1949), a work initiated by Hellmayr's pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Painted Parakeet
The painted parakeet (''Pyrrhura picta''), known as the painted conure in aviculture, is a species of bird in subfamily Arinae of the family Psittacidae, the African and New World parrots. It is found in Brazil, Colombia, French Guiana, Guyana, Panama, Suriname, and Venezuela. Taxonomy and systematics The painted parakeet's taxonomy is unsettled. The International Ornithological Committee (IOC) assigns it these four subspecies: * ''P. p. picta'' (nominate), (Müller, 1776) * ''P. p. caeruleiceps'' ("Todd's" or "Perijá" parakeet), (Todd, 1947) * ''P. p. subandina'' (" Sinu" parakeet), (Todd, 1917) * ''P. p. eisenmanni'' ("Azuero" parakeet), (Delgado, 1985) The South American Classification Committee of the American Ornithological Society and the Clements taxonomy add a fifth subspecies, ''emma'', that the IOC considers to be a separate species, the Venezuelan parakeet. BirdLife International's ''Handbook of the Birds of the World'' considers all five of them to be individua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical
The tropics are the regions of Earth surrounding the equator, where the sun may shine directly overhead. This contrasts with the temperate or polar regions of Earth, where the Sun can never be directly overhead. This is because of Earth's axial tilt; the width of the tropics (in latitude) is twice the tilt. The tropics are also referred to as the tropical zone and the torrid zone (see geographical zone). Due to the overhead sun, the tropics receive the most solar energy over the course of the year, and consequently have the highest temperatures on the planet. Even when not directly overhead, the sun is still close to overhead throughout the year, therefore the tropics also have the lowest seasonal variation on the planet; "winter" and "summer" lose their temperature contrast. Instead, seasons are more commonly divided by precipitation variations than by temperature variations. The tropics maintain wide diversity of local climates, such as rain forests, monsoons, sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bolivia
Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, warm valleys, high-altitude Andean plateaus, and snow-capped peaks, encompassing a wide range of climates and biomes across its regions and cities. It includes part of the Pantanal, the largest tropical wetland in the world, along its eastern border. It is bordered by Brazil to the Bolivia-Brazil border, north and east, Paraguay to the southeast, Argentina to the Argentina-Bolivia border, south, Chile to the Bolivia–Chile border, southwest, and Peru to the west. The seat of government is La Paz, which contains the executive, legislative, and electoral branches of government, while the constitutional capital is Sucre, the seat of the judiciary. The largest city and principal industrial center is Santa Cruz de la Sierra, located on the Geog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population, seventh-largest by population, with over 212 million people. The country is a federation composed of 26 Federative units of Brazil, states and a Federal District (Brazil), Federal District, which hosts the capital, Brasília. List of cities in Brazil by population, Its most populous city is São Paulo, followed by Rio de Janeiro. Brazil has the most Portuguese-speaking countries, Portuguese speakers in the world and is the only country in the Americas where Portuguese language, Portuguese is an Portuguese-speaking world, official language. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazil, coastline of . Covering roughly half of South America's land area, it Borders of Brazil, borders all other countries and ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Remiges
Flight feathers (''Pennae volatus'') are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the wings or tail of a bird; those on the wings are called remiges (), singular remex (), while those on the tail are called rectrices ( or ), singular rectrix (). The primary function of the flight feathers is to aid in the generation of both thrust and lift, thereby enabling flight. The flight feathers of some birds perform additional functions, generally associated with territorial displays, courtship rituals or feeding methods. In some species, these feathers have developed into long showy plumes used in visual courtship displays, while in others they create a sound during display flights. Tiny serrations on the leading edge of their remiges help owls to fly silently (and therefore hunt more successfully), while the extra-stiff rectrices of woodpeckers help them to brace against tree trunks as they hammer on them. Even flightless birds still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyrrhura Picta
The painted parakeet (''Pyrrhura picta''), known as the painted conure in aviculture, is a species of bird in subfamily Arinae of the family Psittacidae, the African and New World parrots. It is found in Brazil, Colombia, French Guiana, Guyana, Panama, Suriname, and Venezuela. Taxonomy and systematics The painted parakeet's taxonomy is unsettled. The International Ornithological Committee (IOC) assigns it these four subspecies: * ''P. p. picta'' (nominate), (Müller, 1776) * ''P. p. caeruleiceps'' ("Todd's" or "Perijá" parakeet), (Todd, 1947) * ''P. p. subandina'' (" Sinu" parakeet), (Todd, 1917) * ''P. p. eisenmanni'' ("Azuero" parakeet), (Delgado, 1985) The South American Classification Committee of the American Ornithological Society and the Clements taxonomy add a fifth subspecies, ''emma'', that the IOC considers to be a separate species, the Venezuelan parakeet. BirdLife International's ''Handbook of the Birds of the World'' considers all five of them to be individua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deville's Parakeet
Bonaparte's parakeet (''Pyrrhura lucianii''), also known as Deville's parakeet, or in aviculture as Deville's conure, is a species of parrot in the family Psittacidae. It is restricted to the Brazilian state of Amazonas south of the Solimões river. Description Total length c. . As other members of the ''Pyrrhura picta'' complex, it is a long-tailed mainly green parakeet with a dark red belly, rump and tail-tip (tail all dark red from below), pale grey scaling to the chest, a whitish or dull buff patch on the auriculars and bluish remiges. The cheeks and crown are dark dusky-maroon (often appears almost blackish). Unlike other members of the ''P. picta'' complex, it lacks any bright red or blue to the head (''but see Taxonomy''). The legs are dark greyish. Habitat and behavior It occurs in tropical humid lowland forest and adjacent habitats. It is social and typically seen in pairs or groups. It feeds on fruits, seeds and flowers. The nest is placed in a tree cavity. It is likel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy (biology)
In biology, taxonomy () is the science, scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying groups of biological organisms based on shared characteristics. Organisms are grouped into taxon, taxa (singular: taxon), and these groups are given a taxonomic rank; groups of a given rank can be aggregated to form a more inclusive group of higher rank, thus creating a taxonomic hierarchy. The principal ranks in modern use are domain (biology), domain, kingdom (biology), kingdom, phylum (''division'' is sometimes used in botany in place of ''phylum''), class (biology), class, order (biology), order, family (biology), family, genus, and species. The Swedish botanist Carl Linnaeus is regarded as the founder of the current system of taxonomy, having developed a ranked system known as Linnaean taxonomy for categorizing organisms. With advances in the theory, data and analytical technology of biological systematics, the Linnaean system has transfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Ornithologists' Union
The American Ornithological Society (AOS) is an ornithological organization based in the United States. The society was formed in October 2016 by the merger of the American Ornithologists' Union (AOU) and the Cooper Ornithological Society. Its members are primarily professional ornithologists, although membership is open to anyone with an interest in birds. The society publishes the two scholarly journals, Ornithology' (formerly '' The Auk)'' and Ornithological Applications' (formerly '' The Condor)'' as well as the '' AOS Checklist of North American Birds''. The American Ornithological Society claims the authority to establish standardized English bird names throughout North and South Americas. In 2013, the American Ornithologists' Union (AOU) announced a collaboration with the Cooper Ornithological Society, streamlining operations through joint meetings, a shared publishing office, and a reorientation of their journals. By October 2016, the AOU ceased its independent status, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraphyletic
Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In contrast, a monophyletic grouping (a clade) includes a common ancestor and ''all'' of its descendants. The terms are commonly used in phylogenetics (a subfield of biology) and in the tree model of historical linguistics. Paraphyletic groups are identified by a combination of synapomorphies and symplesiomorphies. If many subgroups are missing from the named group, it is said to be polyparaphyletic. The term received currency during the debates of the 1960s and 1970s accompanying the rise of cladistics, having been coined by zoologist Willi Hennig to apply to well-known taxa like Reptilia (reptiles), which is paraphyletic with respect to birds. Reptilia contains the last common ancestor of reptiles and all descendants of that ancestor exc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MtDNA
Mitochondrial DNA (mtDNA and mDNA) is the DNA located in the mitochondria organelles in a eukaryotic cell that converts chemical energy from food into adenosine triphosphate (ATP). Mitochondrial DNA is a small portion of the DNA contained in a eukaryotic cell; most of the DNA is in the cell nucleus, and, in plants and algae, the DNA also is found in plastids, such as chloroplasts. Mitochondrial DNA is responsible for coding of 13 essential subunits of the complex oxidative phosphorylation (OXPHOS) system which has a role in cellular energy conversion. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that human mtDNA has 16,569 base pairs and encodes 13 proteins. As in other vertebrates, the human mitochondrial genetic code differs slightly from nuclear DNA. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
