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Yellow-headed Parrots
The yellow-headed amazon (''Amazona oratrix''), also known as the yellow-headed parrot and double yellow-headed amazon, is an Endangered species, endangered amazon parrot of Mexico and northern Central America. Measuring in length, it is a stocky short-tailed green parrot with a yellow head. It prefers to live in mangrove forests or forests near rivers or other bodies of water. It is sometimes considered a subspecies of the yellow-crowned amazon (''Amazona ochrocephala''). It is a popular pet and an excellent talker. Poaching for the international pet trade has driven the species to near-extinction in the wild; around half of all wild-caught birds are thought to die in the process. Taxonomy This species is part of the ''Amazona ochrocephala'' complex, which also includes the yellow-naped amazon (''A. auropalliata''). This complex, which has been called "a taxonomic headache", is considered a single species by some authorities and split into three species by others. The split is ...
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Vancouver Aquarium
The Vancouver Aquarium is a public aquarium located in Stanley Park in Vancouver, British Columbia, Canada. In addition to being a major tourist attraction for Vancouver, the aquarium is a centre for marine research, ocean literacy education, climate activism, conservation and marine animal rehabilitation. The Vancouver Aquarium was one of the first facilities to incorporate professional naturalists into the galleries to interpret animal behaviours. Prior to this, at the London Zoo Fish House, naturalists James S. Bowerbank, Ray Lankester, David W. Mitchell and Philip H. Gosse (the creator of the word aquarium) had regularly held "open house" events, but the Vancouver Aquarium was the first to employ educational naturalists on a full-time basis. Aquarium research projects extend worldwide, and include marine mammal rescue and rehabilitation. On August 9, 2010, Prime Minister Stephen Harper and B.C. Premier Gordon Campbell announced capital funding of up to $15 million. The ...
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Conspecific
Biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particular species. Biochemist Linus Pauling stated that "Biological specificity is the set of characteristics of living organisms or constituents of living organisms of being special or doing something special. Each animal or plant species is special. It differs in some way from all other species...biological specificity is the major problem about understanding life." Biological specificity within ''Homo sapiens'' ''Homo sapiens'' has many characteristics that show the biological specificity in the form of behavior and morphological traits. Morphologically, humans have an enlarged cranial capacity and more gracile features in comparison to other hominins. The reduction of dentition is a feature that allows for the advantage of adaptability in diet and survival. As a species, humans are culture dependent and much of human survival relies on the culture and soc ...
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Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is bounded by the continents of Asia and Australia in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), the Pacific Ocean is the largest division of the World Ocean and the hydrosphere and covers approximately 46% of Earth's water surface and about 32% of the planet's total surface area, larger than its entire land area ().Pacific Ocean
. ''Encyclopædia Britannica, Britannica Concise.'' 2008: Encyclopædia Britannica, Inc.
The centers of both the Land and water hemispheres, water hemisphere and the Western Hemisphere, as well as the Pole of inaccessi ...
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Gulf Of Mexico
The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southwest and south by the Mexican states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and Quintana Roo; and on the southeast by Cuba. The coastal areas along the Southern U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida, which border the Gulf on the north, are occasionally referred to as the "Third Coast" of the United States (in addition to its Atlantic and Pacific coasts), but more often as "the Gulf Coast". The Gulf of Mexico took shape about 300 million years ago (mya) as a result of plate tectonics. The Gulf of Mexico basin is roughly oval and is about wide. Its floor consists of sedimentary rocks and recent sediments. It is connected to part of the Atlantic Ocean through the Straits of Florida between the ...
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Belize
Belize is a country on the north-eastern coast of Central America. It is bordered by Mexico to the north, the Caribbean Sea to the east, and Guatemala to the west and south. It also shares a maritime boundary with Honduras to the southeast. Part of the Caribbean region, Belize is a member of the Caribbean Community (CARICOM) and the Commonwealth Caribbean, the historical British West Indies. The Maya civilization spread into the area of Belize between 1500 BCE and 300 CE and flourished until about 1200. European contact began in 1502–04 when Christopher Columbus sailed along the Gulf of Honduras. European exploration was begun by English settlers in 1638. Spanish Empire, Spain and Kingdom of Great Britain, Britain both laid claim to the land until Britain defeated the Spanish in the Battle of St. George's Caye (1798). It became British Honduras, a British colony in 1840, and a Crown colony in 1862. Belize achieved its independence from the United Kingdom on 21 September ...
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Tres Marías Islands
Tres may refer to: * Tres (instrument), a Cuban musical instrument * Tres, Trentino, municipality in Italy * ''Tres'' (2014 film), a Filipino anthology drama film based on short stories * "Tres" (song) by Juanes *"Tres", a song by Líbido from their album ''Hembra'' *TrES, the ''Trans-Atlantic Exoplanet Survey'' *Templi Resurgentes Equites Synarchici, a fictional secret society in the novel ''Foucault's Pendulum'' *MTV Tres, an American cable network which targets programming towards young Hispanic-Americans *Tea Research and Extension Station, Taiwan * ''Tres'' (Fiel a la Vega album), 1999 *Tres (Álvaro Torres album), 1985 * ''Tres'' (poetry collection), a 2000 collection of poems by Roberto Bolaño See also * *Los Tres Los Tres is a Chilean rock band, formed in 1987 in Concepción, Chile, Concepción by Álvaro Henríquez, Roberto "Titae" Lindl, Francisco Molina and Ángel Parra Jr. They are one of the most influential rock en español bands. History The ..., Chilean ro ...
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Amazona Oratrix -Cougar Mountain Zoological Park -hand-8a
Amazon parrots are parrots in the genus ''Amazona''. They are medium-sized, short-tailed parrots native to the Americas, with their range extending from South America to Mexico and the Caribbean. ''Amazona'' is one of the 92 genera of parrots that make up the order Psittaciformes and is in the family Psittacidae, one of three families of true parrots. It contains about thirty species. Most amazons are predominantly green, with accenting colors that depend on the species, and they can be quite vivid. They feed primarily on seeds, nuts, and fruits, supplemented by leafy matter. Many amazons have the ability to mimic human speech and other sounds. Partly because of this, they are popular as pets or companion parrots, and a small industry has developed in breeding parrots in captivity for this market. This popularity has led to many parrots being taken from the wild to the extent that some species have become threatened. The United States and the European Union have made the capture ...
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Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical syste ...
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Tres Marías Amazon
The Tres Marías amazon (''Amazona oratrix tresmariae'') is a subspecies of bird in subfamily Arinae of the family Psittacidae, the African and New World parrots. It is endemic to the Islas Marías off the Pacific coast of Mexico. Taxonomy The Tres Marías amazon was formally described in 1900 by the American naturalist Edward William Nelson. He considered it as a subspecies of the yellow-headed amazon (''Amazona oratrix'') and introduced the trinomial name ''Amazona oratrix tresmariae''. Frank Gill, Pamela Rasmussen and David Donsker in the list maintained on behalf of the International Ornithological Committee (IOC) treat the Tres Marías amazon as a subspecies. BirdLife International's ''Handbook of the Birds of the World'' (HBW), the Clements taxonomy, and the Howard and Moore checklist all retain it as a subspecies of the yellow-headed amazon.Chesser, R. T., S. M. Billerman, K. J. Burns, C. Cicero, J. L. Dunn, B. E. Hernández-Baños, R. A. Jiménez, A. W. Kratter, ...
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Panama Amazon
The Panama amazon, also known as the panamanian parrot, Panama yellow-headed amazon, (''Amazona ochrocephala panamensis'') is a subspecies of the yellow-crowned amazon, and is endemic to Panama (including the Pearl Islands and Coiba) and northwest Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel .... In aviculture, it is sometimes listed as a separate species (''Amazona panamensis''), and this is potentially correct; at least as a phylogenetic species. Description Adults are approximately in length, are bright green with a yellow area on the forehead, and a horn-colored (gray) beak, sometimes with a dark tip, but lacking the reddish coloring on the upper mandible that is present in the nominate yellow-crowned amazon.
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Phylogenetic Nomenclature
Phylogenetic nomenclature is a method of nomenclature for taxa in biology that uses phylogenetic definitions for taxon names as explained below. This contrasts with the traditional method, by which taxon names are defined by a '' type'', which can be a specimen or a taxon of lower rank, and a description in words. Phylogenetic nomenclature is regulated currently by the '' International Code of Phylogenetic Nomenclature'' (''PhyloCode''). Definitions Phylogenetic nomenclature associates names with clades, groups consisting of an ancestor and all its descendants. Such groups are said to be monophyletic. There are slightly different methods of specifying the ancestor, which are discussed below. Once the ancestor is specified, the meaning of the name is fixed: the ancestor and all organisms which are its descendants are included in the taxon named. Listing all these organisms (i.e. providing a full circumscription) requires the complete phylogenetic tree to be known. In practice, t ...
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Clades
In biology, a clade (), also known as a monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach to taxonomy adopted by most biological fields. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed ''monophyletic'' (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms that the molecular biology arm of cladistics has revealed ...
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