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Parasitic Jaeger
The parasitic jaeger (North America) or Arctic skua (Europe) (''Stercorarius parasiticus''), is a seabird in the skua family Stercorariidae. It is a migratory species breeding in Northern Scandinavia, Scotland, Iceland, Greenland, Northern Canada, Alaska, and Siberia and winters across the southern hemisphere. Kleptoparasitism is a major source of food for this species during migration and winter, and is where the name is derived from. Taxonomy The parasitic jaeger was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his ''Systema Naturae'' under the binomial name ''Larus parasiticus''. Linnaeus specified the type locality as "within the Tropic of Cancer of Europe, America and Asia" but this is now restricted to the Swedish coastline. The parasitic jaeger is now placed with the six other skuas in the genus '' Stercorarius'' that was introduced in 1760 by the French zoologist Mathurin Jacques Brisson. The species is considered to be mono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern Taxonomy (biology), taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was the son of a curate and was born in Råshult, in the countryside of Småland, southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathurin Jacques Brisson
Mathurin Jacques Brisson (; 30 April 1723 – 23 June 1806) was a French zoologist and natural philosophy, natural philosopher. Brisson was born on 30 April 1723 at Fontenay-le-Comte in the Vendée department of western France. Note that page 141 is before page 140. His parents wished him to take ecclesiastic orders, but in 1747, he abandoned his studies, and from 1749, was employed by the wealthy French naturalist René Antoine Ferchault de Réaumur as the curator of a large private collection of objects related to natural history that de Réaumur kept at his ancestral home at Réaumur, Vendée, Réaumur in the Vendée. Originally published by F. W. Peters in 1951 as ''Die Entwicklung Der Ornithologie von Aristoteles bis zur Gegenwart''. Brisson became interested in the classification of animals and was influenced by the works of Carl Linnaeus and Jacob Theodor Klein. His book ''Le Règne animal'' was published in 1756, and the highly regarded six-volume work ''Ornithologie'' wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Falcon
Falcons () are birds of prey in the genus ''Falco'', which includes about 40 species. Some small species of falcons with long, narrow wings are called hobbies, and some that hover while hunting are called kestrels. Falcons are widely distributed on all continents of the world except Antarctica, though closely related raptors did occur there in the Eocene. Adult falcons have thin, tapered wings, which enable them to fly at high speed and change direction rapidly. Fledgling falcons, in their first year of flying, have longer flight feathers, which make their configuration more like that of a general-purpose bird such as a broadwing. This makes flying easier while still learning the aerial skills required to be effective hunters like the adults. The falcons are the largest genus in the Falconinae subfamily of Falconidae, which also includes two other subfamilies comprising caracaras and a few other species of "falcons". All these birds kill prey with their beaks, using a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymorphism (biology)
In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative '' phenotypes'', in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating). Ford E.B. 1965. ''Genetic polymorphism''. Faber & Faber, London. Put simply, polymorphism is when there are two or more possibilities of a trait on a gene. For example, there is more than one possible trait in terms of a jaguar's skin colouring; they can be light morph or dark morph. Due to having more than one possible variation for this gene, it is termed 'polymorphism'. However, if the jaguar has only one possible trait for that gene, it would be termed "monomorphic". For example, if there was only one possible skin colour that a jaguar could have, it would be termed monomorphic. The term polyphenism can be used to clarify that the different forms arise from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pomarine Jaeger
The pomarine jaeger (''Stercorarius pomarinus''), pomarine skua, or pomatorhine skua, is a seabird in the skua family Stercorariidae. It is a migrant, wintering at sea in the tropical oceans. Taxonomy The Pomarine Jaeger is most closely related to the larger skuas (species formerly placed in a separate genus ''Catharacta'': Great Skua, Chilean Skua, Brown Skua, and South Polar Skua). Together, the Pomarine Jaeger and the larger skuas are sister to the two smaller skua species, the Parasitic Jaeger and Long-tailed Jaeger. The evolutionary relationships of the Pomarine Jaeger were formerly controversial. Based on plumage similarity between the Pomarine Jaeger and the two smaller jaegers ( Long-tailed Jaeger and Parasitic Jaeger), the three jaegers were formerly placed in a separate genus from the larger skuas (with the jaegers in '' Stercorarius'' and the larger skuas in the former genus ''Catharacta''). However, behavioural evidence was recognized early on as suggesting a l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long-tailed Jaeger
The long-tailed skua or long-tailed jaeger (''Stercorarius longicaudus'') is a seabird in the skua family Stercorariidae. Etymology The word "jaeger" is derived from the German word ''Jäger'', meaning "hunter". The English word "skua" comes from the Faroese name ''skúgvur'' for the great skua, with the island of Skúvoy known for its colony of that bird. The general Faroese term for skuas is ''kjógvi'' . The genus name ''Stercorarius'' is Latin and means "of dung"; the food disgorged by other birds when pursued by skuas was once thought to be excrement. The specific ''longicaudus'' is from Latin ''longus'', "long", and ''cauda'', "tail". Description This species is unmistakable as an adult, with grey back, dark primary wing feathers without a white "flash", black cap and very long tail. Adults often hover over their breeding territories. Juveniles are much more problematic, and are difficult to separate from parasitic jaeger over the sea. They are slimmer, longer-wing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skúvoy
Skúgvoy ( or Skúvoy , ) is an island in the central Faroe Islands, located to the south of Sandoy. It is named after the large number of great skua present on the island (who have a habit of attacking intruders). There is only one settlement on the island: Skúvoy on the east coast. There are two mountains: Knúkur (392 m) and Heyggjurin Mikli (391 m). History The Black Death in the 14th century killed all the inhabitants except one woman; her cottage can still be seen. Skúvoy was also the home of Sigmundur Brestisson, the hero of the Færeyinga saga (Saga of the Faroese). Bird habitat There are 300–400 m cliffs along the west coast, which are home to many guillemots. Egg harvesting takes place in early June, though this occurs in the first week only so as to allow the guillemots to lay again. The island has been identified as an Important Bird Area by BirdLife International because of its significance as a breeding site for seabirds, especially northern fulmars ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Skua
The great skua (''Stercorarius skua''), sometimes known by the name bonxie in Britain, is a large seabird in the skua family Stercorariidae. It is roughly the size of a herring gull. It mainly eats fish caught at the sea surface or taken from other birds. Taxonomy The great skua was described from the Faroe Islands and Iceland by the Danish zoologist Morten Thrane Brünnich in 1764 under the binomial name ''Catharacta skua''. It is now placed in the genus '' Stercorarius'' that was introduced by the French zoologist Mathurin Jacques Brisson in 1760. The English name and species name "skua" is believed to originate from the Faroese ''skúvur'' or ''skúgvur'' and is the only known bird name to originate from the Faroes that has come into regular use elsewhere. In Britain, it is sometimes known by the name bonxie, a Shetland name of Norse origin. The genus name ''Stercorarius'' is Latin and means "of dung"; the food disgorged by other birds when pursued by skuas was once th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Faroese Language
Faroese ( ; ) is a North Germanic languages, North Germanic language spoken as a first language by about 69,000 Faroe Islanders, of whom 21,000 reside mainly in Denmark and elsewhere. It is one of five languages descended from Old Norse#Old West Norse, Old West Norse spoken in the Middle Ages; the others include Nynorsk, Norwegian, Icelandic language, Icelandic, and the extinct Norn language, Norn and Greenlandic Norse. Faroese and Icelandic, its closest extant relative, are not easily Mutual intelligibility, mutually intelligible in speech, but the written languages resemble each other quite closely, largely owing to Faroese's Orthographic depth, etymological orthography. History Around 900 AD, the language spoken in the Faroes was Old Norse, which Norse settlers had brought with them during the time of the settlement of Faroe Islands () that began in 825. However, many of the settlers were not from Scandinavia, but descendants of Norse settlers in the Irish Sea region. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Language
German (, ) is a West Germanic language in the Indo-European language family, mainly spoken in Western Europe, Western and Central Europe. It is the majority and Official language, official (or co-official) language in Germany, Austria, Switzerland, and Liechtenstein. It is also an official language of Luxembourg, German-speaking Community of Belgium, Belgium and the Italian autonomous province of South Tyrol, as well as a recognized national language in Namibia. There are also notable German-speaking communities in other parts of Europe, including: Poland (Upper Silesia), the Czech Republic (North Bohemia), Denmark (South Jutland County, North Schleswig), Slovakia (Krahule), Germans of Romania, Romania, Hungary (Sopron), and France (European Collectivity of Alsace, Alsace). Overseas, sizeable communities of German-speakers are found in the Americas. German is one of the global language system, major languages of the world, with nearly 80 million native speakers and over 130 mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
