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Leks
A lek is an aggregation of male animals gathered to engage in competitive displays and courtship rituals, known as lekking, to entice visiting females which are surveying prospective partners with which to mate. A lek can also indicate an available plot of space able to be utilized by displaying males to defend their own share of territory for the breeding season. A lekking species is characterised by male displays, strong female mate choice, and the conferring of indirect benefits to males and reduced costs to females. Although most prevalent among birds such as black grouse, lekking is also found in a wide range of vertebrates including some bony fish, amphibians, reptiles, and mammals, and arthropods including crustaceans and insects. A classical lek consists of male territories in visual and auditory range of each other. An exploded lek, as seen in the kakapo (the owl parrot), has more widely separated territories, but still in auditory range. Lekking is associated with an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swedish (language)
Swedish ( ) is a North Germanic language spoken predominantly in Sweden and in parts of Finland. It has at least 10 million native speakers, the fourth most spoken Germanic language and the first among any other of its type in the Nordic countries overall. Swedish, like the other Nordic languages, is a descendant of Old Norse, the common language of the Germanic peoples living in Scandinavia during the Viking Era. It is largely mutually intelligible with Norwegian and Danish, although the degree of mutual intelligibility is largely dependent on the dialect and accent of the speaker. Written Norwegian and Danish are usually more easily understood by Swedish speakers than the spoken languages, due to the differences in tone, accent, and intonation. Standard Swedish, spoken by most Swedes, is the national language that evolved from the Central Swedish dialects in the 19th century and was well established by the beginning of the 20th century. While distinct regional varietie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla ( hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla (cetaceans and even-toed ungulates), and the Carnivora ( cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, toget ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds
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 swimmin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Grouse
The black grouse (''Lyrurus tetrix''), also known as northern black grouse, Eurasian black grouse, blackgame or blackcock, is a large game bird in the grouse family. It is a sedentary species, spanning across the Palearctic in moorland and steppe habitat when breeding, often near wooded areas. They will spend the winter perched in dense forests, feeding almost exclusively on the needles of conifers. The black grouse is one of 2 species of grouse in the genus '' Lyrurus'', the other being the lesser-known Caucasian grouse. The female is greyish-brown and has a cackling or warbling call. She takes all responsibility for nesting and caring for the chicks, as typical with most galliforms. The black grouse's genome was sequenced in 2014. Taxonomy and naming The black grouse was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his '' Systema Naturae'' under the binomial name ''Tetrao tetrix''. Both ''Tetrao'' and ''tetrix'' come from Anc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tetraonidae
Grouse are a group of birds from the order Galliformes, in the family Phasianidae. Grouse are presently assigned to the tribe Tetraonini (formerly the subfamily Tetraoninae and the family Tetraonidae), a classification supported by mitochondrial DNA sequence studies, and applied by the American Ornithologists' Union, ITIS, International Ornithological Congress, and others. Grouse inhabit temperate and subarctic regions of the Northern Hemisphere, from pine forests to moorland and mountainside, from 83°N (rock ptarmigan in northern Greenland) to 28°N ( Attwater's prairie chicken in Texas). Turkeys are closely related to grouse and are also classified in the tribe Tetraonini. The koklass pheasant is also closely allied with them. Description Grouse are heavily built like other Galliformes, such as chickens. They range in length from , and in weight from . Males are larger than females—twice as heavy in the western capercaillie, the largest member of the family. Grouse hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
-lock
The suffix ''-lock'' in Modern English survives only in '' wedlock'' and '' bridelock''. It descends from Old English ''-lác'' which was more productive, carrying a meaning of "action or proceeding, state of being, practice, ritual". As a noun, Old English ''lác'' means "play, sport", deriving from an earlier meaning of "sacrificial ritual or hymn" (Proto-Germanic ''*laikaz''). A putative term for a "hymn to the gods" (''* ansu-laikaz'') in early Germanic paganism is attested only as a personal name, Oslac. Suffix The Old English nouns in ''-lác'' include ''brýdlác'' "nuptials" (from the now obsolete ''bridelock''), ''beadolác'', ''feohtlác'' and ''heaðolác'' "warfare", ''hǽmedlác'' and ''wiflác'' "sexual intercourse", ''réaflác'' "robbery", ''wítelác'' "punishment", ''wróhtlác'' "calumny" besides the ''wedlác'' "pledge-giving", also "nuptials" ancestral to ''wedlock''. A few compounds appear only in Middle English, thus ''dweomerlak'' "occult practice, magic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llewelyn Lloyd (naturalist)
E. H. Llewelyn Lloyd (27 July 1792 – 17 February 1876), also published as Lewis Lloyd, was a Welsh amateur naturalist who lived for more than two decades in Sweden. Lloyd first wrote ''North of Europe: Comprised in a Personal Narrative of a Residence in Sweden and Norway, in the Years 1827–28'' then other diaries and notes. He wrote mainly on Scandinavia's local customs, peasant life, and on nature - particularly ornithology and on the black wolf and wolf hunting Wolf hunting is the practice of hunting gray wolves ''(Canis lupus)'' or other species of wolves. Wolves are mainly hunted for sport, for their skins, to protect livestock and, in some rare cases, to protect humans. Wolves have been actively hun ....The Journal of Gustaf De Vylder: Naturalist in South-western ...ed. Ione Rudner, Jalmar Rudner - 1997 - "Charles John Andersson (1827-1867), son of Llewellyn Lloyd a wealthy Englishman living in Sweden," Works *''North of Europe: Comprised in a Personal Narrative of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frederick Warne & Co
Frederick Warne & Co. is a British publisher founded in 1865. It is known for children's books, particularly those of Beatrix Potter, and for its Observer's Books. Warne is an imprint of Penguin Random House, a subsidiary of German media conglomerate Bertelsmann. History Frederick Warne & Co. was founded in July 1865 by London bookseller and publisher, Frederick Warne. The business was one successor to Routledge, Warne, Routledge (thus from 1858), the publishing partnership of Warne with his brother-in-law George Routledge and the eldest of Routledge's sons. The other successor was George Routledge & Sons.Imminent termination of the partnership and succession by Routledge was reported in "Literary Gossip", ''The London Review'', 17 June 1865, p. 646. "On the 30th of the present month the partnership hitherto subsisting between Mr. George Routledge, Mr. F. Warne, and Mr. R. W. Routledge, will terminate. After that date, business will be carried on by the Mess ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladogram
A cladogram (from Greek ''clados'' "branch" and ''gramma'' "character") is a diagram used in cladistics to show relations among organisms. A cladogram is not, however, an evolutionary tree because it does not show how ancestors are related to descendants, nor does it show how much they have changed, so many differing evolutionary trees can be consistent with the same cladogram. A cladogram uses lines that branch off in different directions ending at a clade, a group of organisms with a last common ancestor. There are many shapes of cladograms but they all have lines that branch off from other lines. The lines can be traced back to where they branch off. These branching off points represent a hypothetical ancestor (not an actual entity) which can be inferred to exhibit the traits shared among the terminal taxa above it. This hypothetical ancestor might then provide clues about the order of evolution of various features, adaptation, and other evolutionary narratives about an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Sage-Grouse At Lek (6948123054)
Greater may refer to: *Greatness, the state of being great *Greater than, in inequality * ''Greater'' (film), a 2016 American film *Greater (flamingo), the oldest flamingo on record * "Greater" (song), by MercyMe, 2014 *Greater Bank Greater Bank is an Australian customer-owned bank and mutual financial institution with headquarters in Hamilton, New South Wales. The bank was previously known as the Greater Building Society, or simply "The Greater”, and provides services to ..., an Australian bank * Greater Media, an American media company See also * * {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capercaillie
''Tetrao'' is a genus of birds in the grouse subfamily known as capercaillies. They are some of the largest living grouse. Taxonomy The genus ''Tetrao'' was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his ''Systema Naturae''. The genus name is the Latin word for a game bird, probably a black grouse. The black grouse was included by Linnaeus in the genus ''Tetrao'' but is now placed in the genus '' Lyrurus''. The type species was designated as the western capercaillie (''Tetrao urogallus'') by George Robert Gray in 1840. Species The genus contains two species: The fossil record of this genus is extensive: * ''Tetrao conjugens'' (Early Pliocene of C Europe) * ''Tetrao rhodopensis'' (Early Pliocene of Dorkovo, Bulgaria) * ''Tetrao partium'' (Early Pliocene - Early Pleistocene of SE Europe) * ''Tetrao macropus'' (Late Pliocene - Early Pleistocene of Hungary) * ''Tetrao praeurogallus ''Tetrao'' is a genus of birds in the grouse subfamily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fisherian Runaway
Fisherian runaway or runaway selection is a sexual selection mechanism proposed by the mathematical biologist Ronald Fisher in the early 20th century, to account for the evolution of ostentatious male ornamentation by persistent, directional female choice. An example is the colourful and elaborate peacock plumage compared to the relatively subdued peahen plumage; the costly ornaments, notably the bird's extremely long tail, appear to be incompatible with natural selection. Fisherian runaway can be postulated to include sexually dimorphic phenotypic traits such as behavior expressed by a particular sex. Extreme and (seemingly) maladaptive sexual dimorphism represented a paradox for evolutionary biologists from Charles Darwin's time up to the modern synthesis. Darwin attempted to resolve the paradox by assuming heredity for both the preference and the ornament, and supposed an "aesthetic sense" in higher animals, leading to powerful selection of both characteristics in subsequent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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