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Ptiloris
The genus ''Ptiloris'' consists of four allopatric species of birds in the family Paradisaeidae. These birds of paradise are commonly known as riflebirds, so named for the likeness of their black velvety plumage to the uniform of the Rifle Brigade. Alternatively, the bird's cry is similar to a rifle being fired and hitting its target but a call like this is not commonly reported (see Behaviour and Ecology). They are distributed in the rainforests of New Guinea and Eastern Australia. Taxonomy and systematics The genus ''Ptiloris'' was introduced in 1825 by the English naturalist William Swainson for a single species, the paradise riflebird. This is now the type species. The genus name, ''Ptiloris'' [pronounced TI-lo-ris], means "feather nose" from the Greek (feather or down) and (nostril). It refers to the frontal feathers hiding the nostrils. The genus is part of the bird-of-paradise family, Paradisaeidae, in the order Passeriformes (songbirds). The four species are the magnif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paradise Riflebird (Ptiloris Paradiseus) (31418919975)
The paradise riflebird (''Ptiloris paradiseus'') is a passerine bird of the family Paradisaeidae. It is one of four riflebird species in the genus ''Ptiloris''. It is found in subtropical, temperate rainforests in eastern Australia. The species is sexually dimorphic; the male is black with iridescent blue-green patches, while the female is gray-brown and white. The paradise riflebird is frugivorous and insectivorous. During breeding season, males are promiscuous and perform solitary displays for females, which involves moving rapidly from side to side with the head tilted back, showing off the neck plumage. Taxonomy The paradise riflebird was formally described in 1825 by the English naturalist William Swainson under the current binomial name ''Ptiloris paradiseus''. It is one of the four riflebird species that are now placed in the genus ''Ptiloris''. The common name "riflebird" comes from the likeness of their black velvety plumage to the uniform of the British Army Rifle Bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria's Riflebird
Victoria's riflebird (''Ptiloris victoriae''), also known as the lesser riflebird, Queen Victoria riflebird, Queen Victoria's riflebird, or Victoria riflebird, is a bird-of-paradise endemic to the Atherton Tableland region of northeastern Queensland, Australia where it resides year-round. Taxonomy and systematics The Victoria's riflebird was discovered by John Macgillivray for John Gould in 1848 and is named after Queen Victoria of the United Kingdom. The common name "riflebird" comes from the likeness of their black velvety plumage to the uniform of the British Army Rifle Brigade. Description The smallest riflebird, it measures between 23–25 cm. Males have an iridescent purple sheen plumage, which becomes more blue-green on the head and more bronze on the lower breast. The throat is velvety black with a metallic green and blue triangular patch in the center. Females have a pale eyebrow, and the buff underparts are faintly barred with brown. Behavior Breeding When t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paradisaeidae
The birds-of-paradise are members of the Family (biology), family Paradisaeidae of the order Passeriformes. The majority of species are found in eastern Indonesia, Papua New Guinea, and eastern Australia. The family has 45 species in 17 genera. The members of this family are perhaps best known for the plumage of the males of the species, the majority of which are sexually dimorphic. The males of these species tend to have very long, elaborate feathers extending from the beak, wings, tail, or head. For the most part, they are confined to dense rainforest habitats. The diet of all species is dominated by fruit and to a lesser extent arthropods. The birds-of-paradise have a variety of breeding systems, ranging from Monogamy in animals, monogamy to Lek (mating arena), lek-type Animal sexual behaviour#Polygamy, polygamy. A number of species are threatened by hunting and habitat loss. Taxonomy The family Paradisaeidae is introduced (as Paradiseidae) in 1825 with ''Paradisaea'' as the t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Growling Riflebird
The growling riflebird (''Ptiloris intercedens''), also known as the eastern riflebird, is a medium-sized passerine bird of the family Paradisaeidae. The growling riflebird is endemic to the lowlands of easternmost Papua New Guinea. The male is polygamous and performs its courtship display solitarily. The diet consists mainly of fruits and arthropods. A common species throughout its range, the growling riflebird is evaluated as being of least concern on the IUCN Red List of Threatened Species. It is listed on Appendix II of CITES. The common name "riflebird" comes from the likeness of their black velvety plumage to the uniform of the British Army Rifle Brigade. Description The male is a velvet black and green bird-of-paradise with black flank plumes, black curved bill Bill(s) may refer to: Common meanings * Banknote, paper cash (especially in the United States) * Bill (law), a proposed law put before a legislature * Invoice, commercial document issued by a seller to a buyer * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller islands. It has a total area of , making it the list of countries and dependencies by area, sixth-largest country in the world and the largest in Oceania. Australia is the world's flattest and driest inhabited continent. It is a megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and Climate of Australia, climates including deserts of Australia, deserts in the Outback, interior and forests of Australia, tropical rainforests along the Eastern states of Australia, coast. The ancestors of Aboriginal Australians began arriving from south-east Asia 50,000 to 65,000 years ago, during the Last Glacial Period, last glacial period. By the time of British settlement, Aboriginal Australians spoke 250 distinct l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerophyll
Sclerophyll is a type of vegetation that is adapted to long periods of dryness and heat. The plants feature hard leaves, short Internode (botany), internodes (the distance between leaves along the stem) and leaf orientation which is parallel or oblique to direct sunlight. Sclerophyllous plants occur in many parts of the world, but are most typical of areas with low rainfall or seasonal droughts, such as Australia, Africa, and western North and South America. They are prominent throughout Australia, parts of Flora of Argentina, Argentina, the Cerrado biogeographic region of Geography of Bolivia, Bolivia, Geography of Paraguay, Paraguay and Flora of Brazil, Brazil, and in the Mediterranean forests, woodlands, and scrub, Mediterranean biomes that cover the Mediterranean Basin, California chaparral and woodlands, California, Chilean Matorral, Chile, and the Cape Province of South Africa. In the Mediterranean basin, Quercus ilex, holm oak, cork oak and olives are typical hardwood tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allopatric
Allopatric speciation () – also referred to as geographic speciation, vicariant speciation, or its earlier name the dumbbell model – is a mode of speciation that occurs when biological populations become geographically isolated from each other to an extent that prevents or interferes with gene flow. Various geographic changes can arise such as the movement of continents, and the formation of mountains, islands, bodies of water, or glaciers. Human activity such as agriculture or developments can also change the distribution of species populations. These factors can substantially alter a region's geography, resulting in the separation of a species population into isolated subpopulations. The vicariant populations then undergo genetic changes as they become subjected to different selective pressures, experience genetic drift, and accumulate different mutations in the separated populations' gene pools. The barriers prevent the exchange of genetic information between ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
