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Limnornis
The curve-billed reedhaunter (''Limnornis curvirostris'') is a species of bird in the family Furnariidae. It is found in marshy areas of north-eastern Argentina, south-eastern Brazil, and Uruguay. It occupies a similar ecological niche to some reed warblers. The curve-billed reedhaunter is placed in the monotypic genus ''Limnornis''. The superficially similar straight-billed reedhaunter is sometimes also included in ''Limnornis'', but evidence suggests it is closer to ''Cranioleuca'' spinetails than it is to the curve-billed reedhaunter.Olson, S. L., M. Irestedt, P. G. P. Ericson, & J. Fjeldså. 2005. ''Independent evolution of two Darwinian marsh-dwelling ovenbirds (Furnariidae: Limnornis, Limnoctites).'' Ornitologia Neotropical 16: 347-359. References * Gould, John (1839): enus Limnornis ''In:'' Zoology of the Voyage of the H.M.S. Beagle. Part III: Birds. 11: 80. curve-billed reedhaunter Birds of the Pampas Birds of Uruguay curve-billed reedhaunter The curve-billed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeolimnornis
''Palaeocursornis'' is a monotypic genus of pterosaurs. The only known species, ''P. corneti'', was described in 1984 based on a single bone ( MTCO-P 1637) interpreted as the distal part of a left femur, found in Early Cretaceous (Berriasian rocks (dating to around 143 mya) from a mine at Cornet near Oradea in northwestern Romania. It was initially assumed to be a flightless paleognathe bird, possibly a ratite, and later as a more primitive ornithuromorph or non-avialan theropod (Benton ''et al.'', 1997). However, re-evaluation of the specimen suggested that it was not a femur at all, but the upper arm bone (humerus) of a pterodactyloid pterosaur similar to '' Azhdarcho''. The animal occurred on what at that time was an archipelago of volcanic and coral islands towards the east of the Piemont-Liguria Ocean. As the archipelago lay around 35°N latitude in a warmer, wetter climate than exists today, it was roughly similar to today's Caribbean or Indonesia. The habit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palaeocursornis
''Palaeocursornis'' is a monotypic genus of pterosaurs. The only known species, ''P. corneti'', was described in 1984 based on a single bone ( MTCO-P 1637) interpreted as the distal part of a left femur, found in Early Cretaceous (Berriasian rocks (dating to around 143 mya) from a mine at Cornet near Oradea in northwestern Romania. It was initially assumed to be a flightless paleognathe bird, possibly a ratite, and later as a more primitive ornithuromorph or non-avialan theropod (Benton ''et al.'', 1997). However, re-evaluation of the specimen suggested that it was not a femur at all, but the upper arm bone (humerus) of a pterodactyloid pterosaur similar to ''Azhdarcho''. The animal occurred on what at that time was an archipelago of volcanic and coral islands towards the east of the Piemont-Liguria Ocean. As the archipelago lay around 35°N latitude in a warmer, wetter climate than exists today, it was roughly similar to today's Caribbean or Indonesia. The habitat of ''Palaeoc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Straight-billed Reedhaunter
The straight-billed reedhaunter (''Limnoctites rectirostris'') is a South American bird species in the family Furnariidae. Taxonomy Formerly it was placed in ''Limnornis'' with the curve-billed reedhaunter (''Limnornis curvirostris'') which lives in the same general region and habitat, and thus shares some adaptations with ''L. rectirostris''. But ''L. rectirostris'' is closer to the typical spinetails (''Cranioleuca'') than to the curve-billed reedhaunter, and is the sister species of the sulphur-bearded reedhaunter. Behaviour As with many of its relatives, rather little is known about its reproductive habits. In southern Uruguay, a juvenile was observed in mid-January (i.e. midsummer). Distribution and habitat This bird is found in north-eastern Argentina, south-eastern Brazil and Uruguay. In its range, it is essentially limited to marshy areas in pampas and campos from coastal lowlands to highlands. In Brazil, it is found in Rio Grande do Sul and Santa Catarina States. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Romania
Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, Serbia to the southwest, Moldova to the east, and the Black Sea to the southeast. It has a predominantly Temperate climate, temperate-continental climate, and an area of , with a population of around 19 million. Romania is the List of European countries by area, twelfth-largest country in Europe and the List of European Union member states by population, sixth-most populous member state of the European Union. Its capital and largest city is Bucharest, followed by Iași, Cluj-Napoca, Timișoara, Constanța, Craiova, Brașov, and Galați. The Danube, Europe's second-longest river, rises in Germany's Black Forest and flows in a southeasterly direction for , before emptying into Romania's Danube Delta. The Carpathian Mountains, which cross Roma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ecological Niche
In ecology, a niche is the match of a species to a specific environmental condition. Three variants of ecological niche are described by It describes how an organism or population responds to the distribution of resources and competitors (for example, by growing when resources are abundant, and when predators, parasites and pathogens are scarce) and how it in turn alters those same factors (for example, limiting access to resources by other organisms, acting as a food source for predators and a consumer of prey). "The type and number of variables comprising the dimensions of an environmental niche vary from one species to another ndthe relative importance of particular environmental variables for a species may vary according to the geographic and biotic contexts". See also Chapter 2: Concepts of niches, pp. 7 ''ff'' A Grinnellian niche is determined by the habitat in which a species lives and its accompanying behavioral adaptations. An Eltonian niche emphasizes that a spec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Uruguay
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 Pampas
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] |
Cranioleuca
The typical spinetails, ''Cranioleuca'', are a genus of Neotropical birds in the ovenbird family Furnariidae. This is a homogeneous group of small birds that live in forested habitats. The spinetails in this genus differ from those placed in ''Synallaxis'' in having shorter tails and being more arboreal. They are less vocal and more frequently join mixed flocks. Taxonomy and species list The genus ''Cranioleuca'' was introduced in 1853 by the German naturalist Ludwig Reichenbach with the light-crowned spinetail as the type species. The name combines the Ancient Greek ''kranion'' meaning "skull" with ''leukos'' meaning "white". The genus contains 19 species: * Creamy-crested spinetail, ''Cranioleuca albicapilla'' * Light-crowned spinetail, ''Cranioleuca albiceps'' * Marcapata spinetail, ''Cranioleuca marcapatae'' * Line-cheeked spinetail, ''Cranioleuca antisiensis'' * Ash-browed spinetail, ''Cranioleuca curtata'' * Streak-capped spinetail, ''Cranioleuca hellmayri'' * Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus comes above species and below family (taxonomy), family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acrocephalus (bird)
The ''Acrocephalus'' warblers are small, insectivorous passerine birds belonging to the genus ''Acrocephalus''. Formerly in the paraphyletic Old World warbler assemblage, they are now separated as the namesake of the marsh and tree warbler family Acrocephalidae. They are sometimes called marsh warblers or reed warblers, but this invites confusion with marsh warbler and reed warbler proper, especially in North America, where it is common to use lower case for bird species. These are rather drab brownish warblers usually associated with marshes or other wetlands. Some are streaked, others plain. Many species breeding in temperate regions are migratory. This genus has heavily diversified into many species throughout islands across the tropical Pacific. This in turn has led to many of the resulting insular endemic species to become endangered. Several of these species (including all but one of the species endemic to the Marianas and two endemic to French Polynesia) have already go ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. It shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, and a part of Antarctica. The earliest recorded human prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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