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Purple-winged Ground Dove
The purple-winged ground dove (''Paraclaravis geoffroyi'') is a critically endangered species of dove, native to the Atlantic forest, mainly near bamboo, in south-eastern Brazil, far eastern Paraguay, and northern-eastern Argentina (Misiones only). It is threatened by habitat loss and possibly the wild bird trade, and could potentially even be extinct due to its specialized requirements. Behavior It is a nomadic species that follows the masting events of certain species of ''Guadua'' bamboo of the Atlantic forest, namely takuarusu ('' G. chacoensis'') and yatevó ('' G. trinii''); it shares its trait with its closest relative, the maroon-chested ground-dove (''Paraclaravis mondetoura''), which instead specializes on Andean bamboo. This specialized lifestyle may be what led to such a dramatic decline in the species' population despite its relatively large former range, with the mass deforestation of the Atlantic forest in the late 20th century triggering an Allee effect akin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coenraad Jacob Temminck
Coenraad Jacob Temminck (; 31 March 1778 – 30 January 1858) was a Dutch people, Dutch Aristocracy (class), aristocrat, Zoology, zoologist and museum director. Biography Coenraad Jacob Temminck was born on 31 March 1778 in Amsterdam in the Dutch Republic. From his father, Jacob Temminck, who was treasurer of the Dutch East India Company with links to numerous travellers and collectors, he inherited a large collection of bird specimens. His father was a good friend of Francois Levaillant who also guided Coenraad. Temminck's ''Manuel d'ornithologie, ou Tableau systématique des oiseaux qui se trouvent en Europe'' (1815) was the standard work on European birds for many years. He was also the author of ''Histoire naturelle générale des Pigeons et des Gallinacées'' (1813–1817), ''Nouveau Recueil de Planches coloriées d'Oiseaux'' (1820–1839), and contributed to the mammalian sections of Philipp Franz von Siebold's ''Fauna japonica'' (1844–1850). Temminck was the first dire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maroon-chested Ground Dove
The maroon-chested ground dove (''Paraclaravis mondetoura'') is a species of bird in the family Columbidae. It is found in Bolivia, Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Panama, Peru, and Venezuela. Taxonomy and systematics The maroon-chested ground dove was originally placed in genus ''Claravis'' but a 2018 publication created the current genus ''Paraclaravis'' for it and the purple-winged ground dove (''P. geoffroyi'').Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 August 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved August 24, 2021 The International Ornithological Committee (IOC) and Howard and Moore taxonomies treat it as monotypic.Dickinson, E. C., and J. V. Remsen, Editors (2013). The Howard and Moore Complete Checkl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraclaravis
''Paraclaravis'' is a genus that contains two species of doves that live in the Neotropics, with ranges in Middle America and South America. ''Paraclaravis'' doves have red eyes and pink legs, and the plumages of the males are primarily light grey-blue, and the females are primarily brown. Both sexes have a series of distinctive spots or bands on the wings. They are fairly arboreal for ground doves. ''Paraclaravis'' doves have a distinct fast and rocking flight pattern. They are found alone, in pairs or in small flocks in forests. Both species are generally local and rare, and appears to be associated with flowering bamboo. The genus contains two species, which were formerly included with the blue ground dove in the genus ''Claravis'': * Maroon-chested ground dove, ''Paraclaravis mondetoura'' * Purple-winged ground dove The purple-winged ground dove (''Paraclaravis geoffroyi'') is a critically endangered species of dove, native to the Atlantic forest, mainly near bamboo, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazilian Institute Of Environment And Renewable Natural Resources
Brazilian Institute of the Environment and Renewable Natural Resources ( pt, Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis, IBAMA) is the Brazilian Ministry of the Environment's administrative arm. IBAMA supports anti-deforestation of the Amazon, and implements laws against deforestation where the government ceases to implement. IBAMA works to keep the forest from loggers, farming, agricultural farm grazing and anything that would threaten the Amazon. Spix's macaw Among IBAMA's diverse environmental and natural resources activities, it manages The Working Group for the Recovery of the Spix's macaw and the associated ''Ararinha Azul'' project for conserving one of the rarest birds in the world. However the last Spix's macaw living in the wilderness disappeared in 2000 and the species became extinct in the wild. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aviculture
Aviculture is the practice of keeping and breeding birds, especially of wild birds in captivity. Types There are various reasons that people get involved in aviculture. Some people breed birds to preserve a species. Some people breed parrots as companion birds, and some people breed birds to make a profit. Aviculture Aviculture is the practice of keeping birds (class ''Aves'') in captivity using controlled conditions, normally within the confines of an aviary, for hobby, business, research and conservation purposes. Some reasons for aviculture are: breeding birds to preserve the species because many avian species are at risk due to habitat destruction and natural disaster. Aviculture encourages conservation, provides education about avian species, provides companion birds for the public, and includes research on avian behaviour. Publications and avicultural societies Publications on aviculture include books on species which include pets, books on breeding and introductory b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Serra Do Mar
The Serra do Mar (, Portuguese for ''Sea's Ridge'' or ''Sea Ridge'') is a 1,500 km long system of mountain ranges and escarpments in Southeastern Brazil. Geography The Serra do Mar runs parallel to the Atlantic Ocean coast from the state of Espírito Santo to southern Santa Catarina,Angulo, R. J., G. C. Lessa, M. C. de Souza (2009). ''The Holocene Barrier Systems of Paranaguá and Northern Santa Catarina Coasts, Southern Brazil.'' Lecture Notes in Earth Sciences 107: 135-176. although some literature includes the Serra Geral in the Serra do Mar, in which case the range would extend to northeastern Rio Grande do Sul. The main escarpment forms the boundary between the sea-level littoral and the inland plateau (''planalto''), which has a mean altitude of . This escarpment is part of the Great Escarpment that runs along much of the eastern coast of Brazil south from the city of Salvador, Bahia. Mountain ranges The mountain ranges are discontinuous in several places and are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mist Net
Mist nets are used by hunters and poachers, but also by ornithologists and chiropterologists to capture wild birds and bats for banding or other research projects. Mist nets are typically made of nylon or polyester mesh suspended between two poles, resembling a volleyball net. When properly deployed in the correct habitat, the nets are virtually invisible. Mist nets have shelves created by horizontally strung lines that create a loose, baggy pocket. When a bird or bat hits the net, it falls into this pocket, where it becomes tangled. The mesh size of the netting varies according to the size of the species targeted for capture. Mesh sizes can be measured along one side of the edge of a single mesh square, or along the diagonal of that square. Measures given here are along the diagonal. Small passerines are typically captured with 30–38 mm mesh, while larger birds, like hawks and ducks, are captured using mesh sizes of ~127 mm. Net dimensions can vary widely depending ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Violaceous Quail-dove
The violaceous quail-dove (''Geotrygon violacea'') is a species of bird in the family Columbidae. It is found in Argentina, Bolivia, Brazil, Colombia, Costa Rica, Guyana, Nicaragua, Panama, Paraguay, Peru, Suriname, and Venezuela.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 August 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved August 24, 2021 Taxonomy and systematics The violaceous quail-dove and most of what are now the other species in genus ''Geotrygon'' were previously in genus ''Oreopeleia''.Baptista, L. F., P. W. Trail, H. M. Horblit, C. J. Sharpe, P. F. D. Boesman, and E. F. J. Garcia (2020). Violaceous Quail-Dove (''Geotrygon violacea''), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Edito ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympatry
In biology, two related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter one another. An initially interbreeding population that splits into two or more distinct species sharing a common range exemplifies sympatric speciation. Such speciation may be a product of reproductive isolation – which prevents hybrid offspring from being viable or able to reproduce, thereby reducing gene flow – that results in genetic divergence. Sympatric speciation may, but need not, arise through secondary contact, which refers to speciation or divergence in allopatry followed by range expansions leading to an area of sympatry. Sympatric species or taxa in secondary contact may or may not interbreed. Types of populations Four main types of population pairs exist in nature. Sympatric populations (or species) contrast with parapatric populations, which contact one another in adjacent but not shared ranges and do not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blue Ground Dove
The blue ground dove (''Claravis pretiosa'') is a small New World tropical dove. It is a resident breeder from southeastern Mexico to northwestern Peru and northern Argentina, and on Trinidad in the Caribbean. Habitat and breeding The blue ground dove is relatively common in open woodland, forest edges, clearings and roadsides, especially in more humid areas. It is found from sea level to about 1200 m altitude. It builds a flimsy dish nest of twigs 1–11 m high in a tree and lays two white eggs. Description Blue ground doves are small pigeons, 20 cm long with a weight of 65-72 g. Adult males have blue-grey upperparts and paler grey underparts, becoming grey-white on the face. The flight feathers and outer tail feathers are blackish, and the wings are boldly spotted black (these spots often forming distinct bands). The iris is red or yellow, the bare eyering is green, and the legs are flesh-pink. The female has a grey-brown head neck and breast, becoming pale blue-grey on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Passenger Pigeon
The passenger pigeon or wild pigeon (''Ectopistes migratorius'') is an extinct species of pigeon that was endemic to North America. Its common name is derived from the French word ''passager'', meaning "passing by", due to the migratory habits of the species. The scientific name also refers to its migratory characteristics. The morphologically similar mourning dove (''Zenaida macroura'') was long thought to be its closest relative, and the two were at times confused, but genetic analysis has shown that the genus '' Patagioenas'' is more closely related to it than the ''Zenaida'' doves. The passenger pigeon was sexually dimorphic in size and coloration. The male was in length, mainly gray on the upperparts, lighter on the underparts, with iridescent bronze feathers on the neck, and black spots on the wings. The female was , and was duller and browner than the male overall. The juvenile was similar to the female, but without iridescence. It mainly inhabited the deciduous fores ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allee Effect
The Allee effect is a phenomenon in biology characterized by a correlation between population size or density and the mean individual fitness (often measured as ''per capita'' population growth rate) of a population or species. History and background Although the concept of Allee effect had no title at the time, it was first described in the 1930s by its namesake, Warder Clyde Allee. Through experimental studies, Allee was able to demonstrate that goldfish have a greater survival rate when there are more individuals within the tank. This led him to conclude that aggregation can improve the survival rate of individuals, and that cooperation may be crucial in the overall evolution of social structure. The term "Allee principle" was introduced in the 1950s, a time when the field of ecology was heavily focused on the role of competition among and within species. The classical view of population dynamics stated that due to competition for resources, a population will experience a reduc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
