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Raven Matrix
A raven is any of several large-bodied passerine bird species in the genus ''Corvus''. These species do not form a single Taxon, taxonomic group within the genus. There is no consistent distinction between crows and ravens; the two names are assigned to different species chiefly by size. The largest raven species are the common raven and the thick-billed raven; these are also the largest passerine species. Etymology The term ''raven'' originally referred to the common raven (''Corvus corax''), the widespread species of the Northern Hemisphere. The modern English word ''raven'' has cognates in all other Germanic languages, including Old Norse (and subsequently Icelandic language, modern Icelandic) and Old High German , all of which descend from Proto-Germanic . Collective nouns for a group of ravens include a "conspiracy", a "treachery", a "rave" and an "unkindness"; in practice, most people use the more generic "flock". Extant species * ''Corvus albicollis'' – White-neck ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3782 Common Raven In Flight
__NOTOC__ Year 378 (Roman numerals, CCCLXXVIII) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Valens and Valentinian II, Augustus (or, less frequently, year 1131 ''Ab urbe condita''). The denomination 378 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Spring – Emperor Valens returns to Constantinople and mobilises an army (40,000 men). He appoints Sebastianus (magister peditum), Sebastianus, newly arrived from Italy, as ''magister militum'' to reorganize the Roman armies in Thrace. * February – The Lentienses (part of the Alemanni) cross the frozen Rhine and raid the countryside. They are driven back by Roman ''auxilia palatina'' (Celtae and Petulantes), who defend the western frontier. * May – Battle of Argentovaria: Emperor Gratian is forced to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collective Nouns
In linguistics, a collective noun is a word referring to a collection of things taken as a whole. Most collective nouns in everyday speech are not specific to one kind of thing. For example, the collective noun "group" can be applied to people ("a group of people"), or dogs ("a group of dogs"), or objects ("a group of stones"). Some collective nouns are specific to one kind of thing, especially terms of venery, which identify groups of specific animals. For example, "pride" as a term of venery always refers to lions, never to dogs or cows. Other examples come from popular culture such as a group of owls, which is called a "parliament". Different forms of English handle verb agreement with collective count nouns differently. For example, users of British English generally accept that collective nouns take either singular or plural verb forms depending on context and the metonymic shift that it implies, while in some other forms of English the verb agreement is less flexible. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chatham Raven
Chatham may refer to: Jurisdictions * Chatham (electoral district), New Brunswick, Canada (1973–1994) * Chatham (UK Parliament constituency), existed 1832–1950 * Chatham (ward), in the London Borough of Hackney (1965–2014) Military * CFB Chatham, Chatham, New Brunswick, Canada, a former Canadian Forces base * , fifteen ships of the Royal Navy * , four ships of the U.S. Navy People * Chatham (surname), includes a list of notable people with the surname * Chatham Roberdeau Wheat (1826–1862), American and Confederate officer, politician, lawyer and mercenary * Earl of Chatham and Baron Chatham, extinct titles in the Peerage of Great Britain ** William Pitt, 1st Earl of Chatham (1708–1778), British statesman, known toponymically as Chatham ** John Pitt, 2nd Earl of Chatham (1756–1835), British statesman and general Places Canada * Chatham, New Brunswick, a former town, now a neighbourhood of Miramichi * Chatham Township, Ontario, a former township * Cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Raven
The forest raven (''Corvus tasmanicus''), also commonly known as the Tasmanian raven, is a passerine bird in the family Corvidae native to Tasmania and parts of southern Victoria (Australia), Victoria, such as Wilsons Promontory and Portland, Victoria, Portland. Populations are also found in parts of New South Wales, including Dorrigo, New South Wales, Dorrigo and Armidale, New South Wales, Armidale. Measuring in length, it has all-black plumage, beak and legs. As with the other two species of raven in Australia, its black feathers have grey bases. Adults have white Iris (anatomy), irises; younger birds have dark brown and then hazel irises with an inner blue rim. New South Wales populations are recognised as a separate subspecies ''C. tasmanicus boreus'', but appear to be nested within the Tasmanian subspecies genetically. The forest raven lives in a wide variety of habitats in Tasmania but is restricted to more closed forest on mainland Australia. Breeding takes place in spr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown-necked Raven
The brown-necked raven (''Corvus ruficollis'') is a larger bird (52–56 cm in length) than the carrion crow though not as large as the common raven. It has similar proportions to the common raven but the bill is not so large or deep and the wings tend to be a little more pointed in profile. The head and throat are a distinct brownish-black giving the bird its English name, while the rest of the plumage is black glossed with purple, blue or purplish-blue. Like the common raven, thick-billed raven and white-necked raven, it is one of the larger raven species. The feathers of this species often fade quite quickly to a brownish black (even the truly black feathers) and the bird can look distinctly brown by the time it moults. The feet, legs and bill are black. The dwarf raven was formerly considered a subspecies (''Corvus ruficollis edithae'') but this bird now appears to be closer to the pied crow (''C. albus'') than this species. Distribution and habitat This species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fan-tailed Raven
The fan-tailed raven (''Corvus rhipidurus'') is a passerine bird of the Corvidae, crow family native to Eastern Africa and the Arabian Peninsula. Description The fan-tailed raven is completely black including bill, legs and feet and the plumage has a purplish-blue gloss in good light. Worn plumage is slightly coppery-brown. The base of the feathers on the upper neck are white and only seen if the bird is inspected or a strong gust blows them the wrong way. The throat hackles are shorter than in most other ravens. One of the smaller raven species, it is about the same size or slightly larger than the carrion crow, at 47–51 cm, but with a much thicker bill, shorter tail and much larger wings. The voice is described as guttural croaks mixed with the sound of frog-call. Like all corvids, the fan-tailed raven is capable of vocal mimicry; however, this behavior is mostly recorded in captivity and, very rarely, in the wild. Distribution and habitat It occurs in the Middle Eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Little Raven
The little raven (''Corvus mellori'') is a species of the family Corvidae that is native to southeastern Australia. An adult individual is about in length, with completely black plumage, beak, and legs; as with all Australian species of ''Corvus'', the black feathers have a grey base, and the iris of the adult bird is white (typical also of some related species from islands to the north of Australia). Although the little raven was first named by Gregory Mathews in 1912, it was only in 1967 that there was consensus to separate it from the Australian raven (''C. coronoides'') as a distinct species. Taxonomy In the 1960s, the CSIRO were intensively studying Australian raven populations and their relationship to lambing and sheep in southeastern Australia. It became evident that there was a smaller species of raven living alongside the Australian raven. These birds lived in smaller trees, had smaller throat hackles and lacked the bare skin of their larger relative. They were also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dwarf Raven
The Somali crow, or dwarf raven (''Corvus edithae''), is approximately the size (44–46 cm in length) of the carrion crow, ''Corvus corone'' but with a longer bill and a somewhat more brownish cast to the feathers, especially when worn. Distribution and species This species occurs principally in Somalia, Djibouti, the Ogaden and the Northern Frontier District in the Horn of Africa, and can be distinguished from the larger brown-necked raven ''C. ruficollis'' by its call, appearance and differences in its behaviour. It was formerly considered a subspecies of the larger brown-necked raven (''C. ruficollis''), but is now considered to be a distinct species. This crow is thought to be closer to the pied crow ''C. albus'' by some authorities, especially in its behaviour, than to the brown-necked raven. Hybrid birds between the pied crow and the Somali crow appear to reinforce this close relationship where the two species meet. The nest is a ravenlike bulky structure set in e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chihuahuan Raven
The Chihuahuan raven (''Corvus cryptoleucus'') is a species in the family Corvidae that is native to the United States and Mexico. Description The proportions resemble the common raven with a heavy bill, but is about the same size as a carrion crow, or slightly larger than the American crow ( long). The plumage is all-black with a rich purple-blue gloss in good light. Like the forest raven, little raven, fan-tailed raven and Australian raven, it is one of the smaller raven species. The larger species of raven are the common raven, thick-billed raven, white-necked raven and brown-necked raven, with the common and thick-billed ravens being the world's largest raven species and the little and fan-tailed ravens being the smallest. The Chihuahuan raven is similar in appearance to the Australian raven, although with dark brown irises and whiter feather bases. The nasal bristles extend further down the top of the bill than in any other '' Corvus'' species to about two-thirds the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thick-billed Raven
The thick-billed raven (''Corvus crassirostris''), a corvid from the Horn of Africa, shares with the common raven the distinction of being the largest bird in the corvid family. The thick-billed raven averages in length, with a range of and weighs approximately in females and in males on average. Its size is about the same as the largest subspecies of common raven (i.e. those from the Himalayas and Greenland/ Canadian Northwest Atlantic) but some common raven subspecies are rather smaller and, going on average weights, the thick-billed raven is likely the heaviest extant passerine. The thick-billed raven is about 25% heavier on average than the Australasian superb lyrebird, which is sometimes erroneously titled the largest passerine.Madge, S. (2010). ''Crows and jays''. A&C Black. It has a very large bill that is laterally compressed and is deeply curved in profile giving the bird a very distinctive appearance. This bill, the largest of any passerine at in length, is blac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Raven
The Australian raven (''Corvus coronoides'') is a passerine Corvidae, corvid bird native to Australia. Measuring in length, it has an all-black plumage, beak and mouth, as well as strong, greyish-black legs and feet. The upperparts of its body are glossy, with a purple-blue, greenish sheen; its black feathers have grey bases. The Australian raven is distinguished from the Australian crow, and other related corvids, by its long chest feathers, or Hackles, throat hackles, which are prominent in mature birds. Older individuals and Juvenile (organism), subadults have white Iris (anatomy), irises, while the younger birds' eyes display blue inner rims; Hatchling, hatchlings and young birds have brown, dark irises until about fifteen months of age, at which point their irises become hazel-coloured, with an inner blue rim around each pupil, this lasting until they are roughly 2.5 to 3 years of age. Nicholas Aylward Vigors and Thomas Horsfield described the Australian raven in 1827, its s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Raven
The common raven or northern raven (''Corvus corax'') is a large all-black passerine bird. It is the most widely distributed of all Corvidae, corvids, found across the Northern Hemisphere. There are 11 accepted subspecies with little variation in appearance, although recent research has demonstrated significant genetic differences among populations from various regions. It is one of the two largest corvids, alongside the thick-billed raven, and is the heaviest passerine bird; at maturity, the common raven averages in length and in weight, though up to in the heaviest individuals. Although their typical lifespan is considerably shorter, common ravens can live more than 23 years in the wild. Young birds may travel in Flocks of birds, flocks but later mate for life, with each mated pair defending a territory (animal), territory. Common ravens have coexisted with humans for thousands of years and in some areas have been so numerous that people have regarded them as pest (organi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
