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Biak Monarch
The Biak monarch (''Symposiachrus brehmii''), or Biak monarch flycatcher, is a species of bird in the family Monarchidae. It is endemic to Biak Island, Indonesia. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss; the Biak monarch's habitat is affected by clearing forests for agricultural use and by logging. There are an estimated 2,500 to 9,999 adult birds of the species. If juvenile birds are included, the population may be between 3,500 and 15,000 individuals. Its population is decreasing. Taxonomy and systematics This species was originally placed in the genus ''Monarcha'' until moved to ''Symposiachrus'' in 2009. Description Biak monarchs measure 17 centimeters. Its heads, wings, throat, and central tail feathers are dark brown or black; its outer tail feathers, belly, breast, and rump are white. It also has a white patch on its wing. Some of the coloring may differ based on sex Sex is the trait that determines wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann Schlegel
Hermann Schlegel (10 June 1804 – 17 January 1884) was a German ornithologist, herpetologist and ichthyologist. Early life and education Schlegel was born at Altenburg, the son of a brassfounder. His father collected butterflies, which stimulated Schlegel's interest in natural history. The discovery, by chance, of a buzzard's nest led him to the study of birds, and a meeting with Christian Ludwig Brehm. Schlegel started to work for his father, but soon tired of it. He travelled to Vienna in 1824, where, at the university, he attended the lectures of Leopold Fitzinger and Johann Jacob Heckel. A letter of introduction from Brehm to gained him a position at the Naturhistorisches Museum. Ornithological career One year after his arrival, the director of this natural history museum, Carl Franz Anton Ritter von Schreibers, recommended him to Coenraad Jacob Temminck, director of the natural history museum of Leiden, who was seeking an assistant. At first Schlegel worked mainly o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird
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. B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monarchidae
The monarchs (family Monarchidae) comprise a family of over 100 passerine birds which includes shrikebills, paradise flycatchers, and magpie-larks. Monarchids are small insectivorous songbirds with long tails. They inhabit forest or woodland across sub-Saharan Africa, south-east Asia, Australasia and a number of Pacific islands. Only a few species migrate. Many species decorate their cup-shaped nests with lichen. Taxonomy and systematics Some of the one hundred or more species making up the family were previously assigned to other groups, largely on the basis of general morphology or behaviour. The magpie-lark, for example, was assigned to the same family as the white-winged chough, since both build unusual nests from mud rather than vegetable matter. That family, Grallinidae, is now considered a synonym of Monarchidae. It was formerly considered to have four species. The magpie-lark and the torrent-lark were moved into Monarchidae, into the genus ''Grallina'', on the basis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
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] |
Biak Island
Biak is an island located in Cenderawasih Bay near the northern coast of Papua, an Indonesian province, and is just northwest of New Guinea. Biak is the largest island in its small archipelago, and has many atolls, reefs, and corals. The largest population centre is at Kota Biak (Biak City) on the south coast. The rest of the island is thinly populated with small villages. Biak is part of the Biak Islands (''Kepulauan Biak''), and is administered by Biak Numfor Regency. Geography Biak covers an area of The island is long and wide at its widest point. The highest point is approximately 740 meters elevation, located in the northwest of the island. The island of Supiori lies close to the northwest, separated from Biak by a narrow, shallow channel. The smaller Padaido Islands lie south and southeast of Biak. Collectively Biak, Supiori, the Padaido Islands, and the island of Numfor to the southwest are known as the Schouten Islands, also called the Biak Islands or Geelvink Is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, the term habitat summarises the array of resources, physical and biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species habitat can be seen as the physical manifestation of its ecological niche. Thus "habitat" is a species-specific term, fundamentally different from concepts such as environment or vegetation assemblages, for which the term "habitat-type" is more appropriate. The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors will include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, with habitat generalist species able to thrive in a wide array of environmental conditions while habitat specialist species requiring a very limited set of factors to survive. The habitat of a species is not necessarily found in a geographical area, it can be the interior ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest
A forest is an area of land dominated by trees. Hundreds of definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing, and ecological function. The United Nations' Food and Agriculture Organization (FAO) defines a forest as, "Land spanning more than 0.5 hectares with trees higher than 5 meters and a canopy cover of more than 10 percent, or trees able to reach these thresholds ''in situ''. It does not include land that is predominantly under agricultural or urban use." Using this definition, '' Global Forest Resources Assessment 2020'' (FRA 2020) found that forests covered , or approximately 31 percent of the world's land area in 2020. Forests are the predominant terrestrial ecosystem of Earth, and are found around the globe. More than half of the world's forests are found in only five countries (Brazil, Canada, China, Russia, and the United States). The largest share of forests (45 percent) are in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby reducing biodiversity and species abundance. Habitat destruction is the leading cause of biodiversity loss. Fragmentation and loss of habitat have become one of the most important topics of research in ecology as they are major threats to the survival of endangered species. Activities such as harvesting natural resources, industrial production and urbanization are human contributions to habitat destruction. Pressure from agriculture is the principal human cause. Some others include mining, logging, trawling, and urban sprawl. Habitat destruction is currently considered the primary cause of species extinction worldwide. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introdu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monarcha
''Monarcha'' is a genus of bird in the family Monarchidae. They are found in Australia and Melanesia. Taxonomy and systematics The genus ''Monarcha'' was introduced by naturalists Nicholas Vigors and Thomas Horsfield in 1827 with the black-faced monarch (''Monarcha melanopsis'') as the type species. The genus formerly included many more species. Based on the results of a molecular phylogenetic study published in 2005 nineteen species were moved to the resurrected genus '' Symposiachrus'' and three to ''Carterornis''. Extant species The genus ''Monarcha'' contains the following nine species: * Island monarch (''Monarcha cinerascens'') * Black-faced monarch (''Monarcha melanopsis'') * Black-winged monarch (''Monarcha frater'') * Bougainville monarch (''Monarcha erythrostictus'') * Chestnut-bellied monarch (''Monarcha castaneiventris'') * White-capped monarch (''Monarcha richardsii'') * Yap monarch (''Monarcha godeffroyi'') * Tinian monarch (''Monarcha takatsukasae'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated dim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symposiachrus
''Symposiachrus'' is a genus of birds in the family Monarchidae. Most species are endemic to islands in Melanesia but the spectacled monarch is widely distributed and occurs in parts of Indonesia and western Australia. The genus was previously lumped together in the genus ''Monarcha''. Taxonomy and systematics Based on the results of a molecular phylogenetic study published in 2005, the genus ''Monarcha'' was split and 19 species moved to the resurrected genus ''Symposiachrus'' that had been introduced by the French naturalist Charles Lucien Bonaparte in 1854 with the spectacled monarch (''Symposiachrus trivirgatus'') as the type species. The genus name ''Symposiachrus'' combines the Ancient Greek συν/''sun'' meaning "together", ποσις/''posis'' meaning "husband" and αχρως/''akhrōs'' meaning "pallid". The genus ''Symposiachrus'' contains the following twenty–one species: * Black monarch (''Symposiachrus axillaris'') * Spot-winged monarch (''Symposiachrus guttula'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Schouten Islands
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] |
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