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Black-cheeked Gnateater
The black-cheeked gnateater (''Conopophaga melanops'') is a species of bird in the family Conopophagidae Endemism, endemic to Brazil. The male is distinguished by its orange crown, black face and white throat, while the female has brown plumage. Taxonomy French naturalist Louis Pierre Vieillot described the black-cheeked gnateater in 1818, giving it the species name ''melanops'' from the Ancient Greek words ''melas'' "black" and ''ops'' "face". The black-cheeked gnateater has three subspecies: *''C. m. perspicillata'' (Hinrich Lichtenstein, Lichtenstein, MHK, 1823) - Bahia and Sergipe (eastern Brazil) *''C. m. melanops'' (Louis Pierre Vieillot, Vieillot, 1818) - southeastern Brazil *''C. m. nigrifrons'' Olivério Pinto, Pinto, 1954 - Paraíba to Alagoas (eastern Brazil) Description Measuring 11.5 cm (4.5 in), the black-cheeked gnateater is a small round bird with a short tail. It exhibits sexual dimorphism, as the male has distinctive coloured plumage and the female i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louis Pierre Vieillot
Louis Pierre Vieillot (10 May 1748, Yvetot – 24 August 1830, Sotteville-lès-Rouen) was a French ornithologist. Vieillot is the author of the first scientific descriptions and Linnaean names of a number of birds, including species he collected himself in the West Indies and North America and South American species discovered but not formally named by Félix de Azara and his translator Sonnini de Manoncourt. He was among the first ornithologists to study changes in plumage and one of the first to study live birds. At least 77 of the genera erected by Vieillot are still in use. Biography Vieillot was born in Yvetot. He represented his family's business interests in Saint-Domingue (Haiti) on Hispaniola, but fled to the United States during the Haitian rebellions that followed the French Revolution. On Buffon's advice, he collected material for the , the first two volumes of which were published in France beginning in 1807. Vieillot returned to France for the last time in 1798, whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, dioecious species, which consist of most animals and some plants. Differences may include secondary sex characteristics, size, weight, color, markings, or behavioral or cognitive traits. Male-male reproductive competition has evolved a diverse array of sexually dimorphic traits. Aggressive utility traits such as "battle" teeth and blunt heads reinforced as battering rams are used as weapons in aggressive interactions between rivals. Passive displays such as ornamental feathering or song-calling have also evolved mainly through sexual selection. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', when both biological sexes are phenotype, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Birds Of Brazil
Endemism is the state of a species being found only 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 also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Described In 1818
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 common ostrich. There are over 11,000 living species and they are split into 44 orders. More than half are passerine or "perching" birds. Birds have wings 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 furth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conopophaga
''Conopophaga'' is a genus of birds in the gnateater family. Its members are found in forest and woodland in South America. Taxonomy and species list The genus ''Conopophaga'' was introduced in 1816 by the French ornithologist Louis Pierre Vieillot. The name combines the Ancient Greek ''kōnōps'' meaning "gnat" with ''-phagos'' meaning "-eating". The type species was subsequently designated as the chestnut-belted gnateater by George Robert Gray in 1840. Peters incorrectly gives the page in Gray 1840 as 41. The genus now contains ten species, all with "gnateater" in their common names. Distribution and habitat Gnateaters are birds found in the undergrowth of forest, woodland, and bamboo stands, with most species in the Amazon Basin, the Atlantic Forest, and the East Andean slopes. All are associated with dense thickets. While they are always found near the ground, seldom rising more than 1.5 m up, they also seldom travel or spend much time on the ground itself (though they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clutch (eggs)
A clutch of eggs is the group of eggs produced by birds, amphibians, or reptiles, often at a single time, particularly those laid in a nest. In birds, destruction of a clutch by predators (or removal by humans, for example the California condor breeding program) results in ''double-clutching''. The technique is used to double the production of a species' eggs, in the California condor case, specifically to increase population size. Size Clutch size differs greatly between species, sometimes even within the same genus. It may also differ within the same species due to many factors including habitat, health, nutrition, predation pressures, and time of year. Clutch size variation can also reflect variation in optimal reproduction effort. In birds, clutch size can vary within a species due to various features (age and health of laying female, ability of male to supply food, and abundance of prey), while some species are determinant layers, laying a species-specific number of egg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monogamy In Animals
Some animal species have a monogamous mating system, in which pairs bond to raise offspring. This is associated, usually implicitly, with sexual monogamy. Monogamous mating Monogamy is defined as a pair bond between two adult animals of the same species. This pair may cohabitate in an area or territory for some duration of time, and in some cases may copulate and reproduce with only each other. Monogamy may either be short-term, lasting one to a few seasons or long-term, lasting many seasons and in extreme cases, life-long. Monogamy can be partitioned into two categories, social monogamy and genetic monogamy which may occur together in some combination, or completely independently of one another.Ophir, Alexander G., Phelps, Steven M., Sorin, Anna Bess & O. Wolff, J. (2008)Social but not genetic monogamy is associated with greater breeding success in prairie voles/ref> As an example, in the cichlid species '' Variabilichromis moorii'', a monogamous pair will care for eggs and y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest
A forest is an ecosystem characterized by a dense ecological community, community of 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 (biology), 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 (FRA), Global Forest Resources Assessment 2020'' found that forests covered , or approximately 31 percent of the world's land area in 2020. Forests are the largest Terrestrial ecosystem, terrestrial ecosystems of Earth by area, and are found around the globe. 45 percent of forest land is in the Tropical forest, trop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat
In ecology, habitat refers to the array of resources, 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 Biophysical environment, 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 Luminous intensity, light intensity. Biotic index, Biotic factors include the availability of food and the presence or absence of Predation, predators. Every species has particular habitat requirements, habitat generalist species are able to thrive in a wide array of environmental conditions while habitat specialist species require a very limited set of factors to survive. The habitat of a species is not necessarily found in a ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Santa Catarina (state)
Santa Catarina () is one of the 27 federative units of Brazil. It is located in the centre of the country's South Region, Brazil, Southern region. It is bordered to the north by the state of Paraná (state), Paraná, to the south by the state of Rio Grande do Sul, to the east by the Atlantic Ocean, and to the west by the Provinces of Argentina, Argentine province of Misiones Province, Misiones. The state covers an area of approximately , comparable to Hungary, and ranking as the List of Brazilian states by area, seventh smallest Brazilian state by area. With a population of 7.6 million inhabitants in 2022, it is the List of Brazilian states by population, tenth most populous state in Brazil. It is divided into 295 municipalities and its capital is Florianópolis, the second most populous city in the state after Joinville. Alongside Espírito Santo, Santa Catarina is one of the two states whose capital is not the largest city. Jorginho Mello, a member of the Conservative liberali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rufous Gnateater
The rufous gnateater (''Conopophaga lineata'') is a passerine bird of the gnateater family, Conopophagidae. It is found in forest understory and bushes in eastern Brazil from Rio Grande do Sul north to central Brazil. Its range also extends into eastern Paraguay and north-eastern Argentina and it has recently been recorded in Uruguay. It is often elusive and hard to see, but is commoner and less shy than other gnateaters. Description It is a small, rounded bird, 13 cm in length with a short tail and fairly long legs. The plumage is mostly reddish brown. There is a white stripe above the eye (grey in the female) which ends in a tuft of feathers which can be hidden. The call is a series of quiet cheeps which become faster and higher-pitched. At dusk and dawn the males make a buzzing sound with their wing feathers as they fly around their territory. The rufous gnateater feeds by moving quickly from one perch to another through undergrowth close to the ground. When it sees an in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
