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Grey-crowned Flatbill
The grey-crowned flatbill or grey-crowned flycatcher (''Tolmomyias poliocephalus'') is a species of bird in the family Tyrannidae. It is found in humid forest in the Amazon and Atlantic Forest in South America. It closely resembles the yellow-margined and yellow-olive flatbills, but its lower mandible is dark with a pale base. It is a fairly common bird with a wide range and the International Union for Conservation of Nature has rated it as "least concern". Description ''Tolmomyias'' flatbills are robust small birds with broad beaks. The grey-crowned flatbill is about long and has a generally yellowish-green plumage, a grey cap and nape, and a yellowish throat marked with grey. The iris is usually a pale colour and the mandible has a dark tip. Several species of flatbill overlap in their range and are easily confused with each other visually, but their songs are mostly distinctive. The grey-crowned flatbill's song is a series of whistles rising in pitch with the final whistle t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manaus
Manaus () is the capital and largest city of the Brazilian state of Amazonas. It is the seventh-largest city in Brazil, with an estimated 2020 population of 2,219,580 distributed over a land area of about . Located at the east center of the state, the city is the center of the Manaus metropolitan area and the largest metropolitan area in the North Region of Brazil by urban landmass. It is situated near the confluence of the Negro and Solimões rivers. It is the only city in the Amazon Rainforest with a population over 1 million people. The city was founded in 1669 as the Fort of São José do Rio Negro. It was elevated to a town in 1832 with the name of "Manaus", an altered spelling of the indigenous Manaós peoples, and legally transformed into a city on October 24, 1848, with the name of ''Cidade da Barra do Rio Negro'', Portuguese for "The City of the Margins of the Black River". On September 4, 1856, it returned to its original name. Manaus is located in the center of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Least-concern Species
A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. They do not qualify as threatened, near threatened, or (before 2001) conservation dependent. Species cannot be assigned the "Least Concern" category unless they have had their population status evaluated. That is, adequate information is needed to make a direct, or indirect, assessment of its risk of extinction based on its distribution or population status. Evaluation Since 2001 the category has had the abbreviation "LC", following the IUCN 2001 Categories & Criteria (version 3.1). Before 2001 "least concern" was a subcategory of the "Lower Risk" category and assigned the code "LR/lc" or lc. Around 20% of least concern taxa (3261 of 15636) in the IUCN database still use the code "LR/lc", which indicates they have not been re-evaluate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Described In 1884
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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Atlantic Forest
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. Bird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Guianas
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. Bir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of The Amazon Basin
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] |
Tolmomyias
''Tolmomyias'' is a genus of Neotropical birds in the tyrant flycatcher family Tyrannidae. It is one of the two genera containing the "flatbills"; the other is ''Rhynchocyclus''. The genus was erected by the Austrian ornithologist Carl Eduard Hellmayr in 1927 with the yellow-olive flatbill (''Tolmomyias sulphurescens'') as the type species. The genus name ''Tolmomyias'' combines the Ancient Greek ' "courage" or "boldness" with the Neo-Latin ' "flycatcher". These species are notoriously difficult to identify, except by voice. Their taxonomy is complex and it is likely that some "species" actually include several species level taxa. They are relatively thickset birds with proportionally large heads and, as suggested by their name, flat bills. All have a primarily yellow-green plumage Plumage ( "feather") is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Władysław Taczanowski
Władysław Taczanowski (; 17 March 1819, in Jabłonna, Lublin Voivodeship – 17 January 1890, in Warsaw) was a Polish zoologist and collector of natural history who explored the Russian Far East and northern Africa. He specialized mainly in ornithology but also described numerous other taxa including reptiles and arachnids. Life A member of an old noble ('' szlachta'') magnate family, Taczanowski, from the Poznań region Władysław studied in Lublin and managed the family farm after the death of his father. He then joined government service and served on special missions of the governor of Radom. He joined the Warsaw University Museum in 1855 and began to travel and train at other museums. In 1865 he joined Benedict Dybowski and Victor Godlewski on expeditions to Eastern Russia. In 1862 he succeeded Feliks Paweł Jarocki as curator. Taczanowski took part in an expedition to Algeria with Antoni S. Waga (1866–67) and wrote several significant studies including ''Birds of Pol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow-olive Flatbill
The yellow-olive flatbill or yellow-olive flycatcher (''Tolmomyias sulphurescens'') is a species of bird in the family Tyrannidae. It is found in tropical and subtopical forest and woodland in Central and South America, but over its range there are significant variations in plumage, iris-colour and voice, leading to speculations that more than one species is involved. Its plumage is overall greenish-yellow, the lores are whitish, the crown is often greyish and some subspecies have a dusky patch on the auriculars. The flat bill is black above and pale pinkish or greyish below; similar to the yellow-margined flatbill, but unlike the grey-crowned flatbill. References Further reading * yellow-olive flatbill Birds of Central America Birds of South America yellow-olive flatbill The yellow-olive flatbill or yellow-olive flycatcher (''Tolmomyias sulphurescens'') is a species of bird in the family Tyrannidae. It is found in tropical and subtopical forest and woodland in Cent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow-margined Flatbill
The yellow-margined flatbill or Zimmer's flatbill (''Tolmomyias assimilis'') is a species of bird in the tyrant flycatcher family Tyrannidae. It is found in humid forest in southern Central America, and the Chocó and Amazon in South America. There are significant differences (notably voice) between the populations east and west of the Andes, leading to suggestions that the two should be regarded as separate species, in which case the population west of the Andes retains the English name yellow-margined flatbill (or flycatcher) but with the scientific name ''T. flavotectus'', while the Amazonian population retains the scientific name ''T. assimilis'' but with the English name Zimmer's flatbill (or flycatcher). Both population closely resemble the yellow-olive flatbill The yellow-olive flatbill or yellow-olive flycatcher (''Tolmomyias sulphurescens'') is a species of bird in the family Tyrannidae. It is found in tropical and subtopical forest and woodland in Central and Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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