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Omissus
{{Short description, Variant of European herring gull Omissus (Larus argentatus omissus) is a variant of European herring gull. It is largely similar to a common herring gull, but unlike the common species, it has yellow legs. There is very little research and documentation about the omissus variant, some authors believe that it may be a species of its own. Omissus can be confused with the Yellow-legged gull, but the omissus does not have as distinctly bright yellow legs as the yellow-legged gull. Omissus was first described in 1928 by the Russian ornithologist Theodor Pleske References Omissus 1. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Herring Gull
The European herring gull (''Larus argentatus'') is a large gull, up to long. It breeds throughout the northern and western coasts of Europe. Some European herring gulls, especially those resident in colder areas, bird migration, migrate further south in winter, but many are permanent residents, such as in Ireland, Great Britain, Britain, Iceland, or on the North Sea shores. They have a varied diet, including fish, crustaceans, as well as some plants, and are also scavengers, consuming carrion and food left by or stolen from humans. Taxonomy Their scientific name is from Latin. ''Larus'' appears to have referred to a gull or other large seabird and ''argentatus'' means decorated with silver. The taxonomy of the herring gull/lesser black-backed gull is contentious, with different authorities recognising between two and eight species. This group has a ring species, ring distribution around the Northern Hemisphere. Most adjacent populations interbreed; however, adjacent terminal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodor Pleske
Theodor Eduard Pleske (Russian form: Fedor Dmitrievich Pleske Фёдор Эдуардович (Дмитриевич) Плеске) (11 July 1858 – 1 August 1932) was a Russian entomologist and ornithologist who worked at the museum of zoology at St. Petersburg. Pleske was born in Peterhof to the upper class German family of Eduard Ludwig (1817-1873) and Margaret Elisabeth Oom (1882-1880). His brother was Eduard Dmitrievich Pleske (1854-1904) who served in the finance ministry. Pleske went to the 2nd St. Petersburg Classical Gymnasium, the German Grammar School St. Petri-Schule, graduating in 1878 to join St Petersburg University. In 1880 he joined an expedition to the Kola Peninsula organized by the St Petersburg Society of Naturalists. He was already interested in birds and made collections which he donated to the Zoological Museum in 1881 where he worked under V.F. Russov and M.N. Bogdanov. After graduating he worked in Vladivostok in the administration but his health suf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow-legged Gull
The yellow-legged gull (''Larus michahellis'') is a large gull found in Europe, the Middle East and North Africa, which has only recently achieved wide recognition as a distinct species. It was formerly treated as a subspecies of either the Caspian gull ''L. cachinnans'', or more broadly as a subspecies of the herring gull ''L. argentatus''. The genus name is from Latin ''Larus'' which appears to have referred to a gull or other large seabird, and the species name honours the German zoologist Karl Michahelles. Classification It is now generally accepted that the yellow-legged gull is a full species, but until recently there was much disagreement. For example, '' British Birds'' magazine split the yellow-legged gull from the herring gull in 1993 but included the Caspian gull in the former, but the BOU in Great Britain retained the yellow-legged gull as a subspecies of the herring gull until 2007. DNA research, however, suggests that the yellow-legged gull is actually closest t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larus
''Larus'' is a large genus of gulls with worldwide distribution (by far the greatest species diversity is in the Northern Hemisphere). Many of its species are abundant and well-known birds in their ranges. Until about 2005–2007, most gulls were placed in this genus, but this arrangement is now known to be polyphyletic, leading to the resurrection of the genera ''Chroicocephalus'', ''Ichthyaetus'', ''Hydrocoloeus'', and ''Leucophaeus'' for many other species formerly included in ''Larus''. They are in general medium-large birds, typically pale grey to black above and white below and on the head, often with black markings with white spots ("mirrors") on their wingtips and in a few species also some black on the tail. They have stout, longish beak, bills and webbed feet; in winter, the head is often streaked or smudged dark grey. The young birds are brown, and take three to five years to reach adult plumage, with subadult plumages intermediate between the young and adult. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Europe
More than 900 species of birds have been observed in Europe. The avifauna of Europe is broadly similar to that of Asia north of the Himalayas and North Africa, both of which also belong to the Palearctic realm. There are also many groups shared with North America. On the other hand, many groups characteristic of the Afrotropical and Indomalayan realms are entirely absent from Europe, including jacanas, darters, trogons, hornbills, honeyguides, barbets (families Lybiidae in Africa and Megalaimidae in Asia), parrots, pittas, cuckooshrikes, broadbills (families Calyptomenidae and Eurylaimidae), drongos, monarch flycatchers, white-eyes, and estrildid finches (although parrots and estrildid finches have been introduced to Europe by humans). Two species that occurred in the European region until recently (post 1800) — the great auk and the Canary Islands oystercatcher — are now globally extinct, while one additional species — the slender-billed curlew — may also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Scandinavia
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 further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scavengers
Scavengers are animals that consume dead organisms that have died from causes other than predation or have been killed by other predators. While scavenging generally refers to carnivores feeding on carrion, it is also a herbivorous feeding behavior. Scavengers play an important role in the ecosystem by consuming dead animal and plant material. ''Decomposers'' and detritivores complete this process, by consuming the remains left by scavengers. Scavengers aid in overcoming fluctuations of food resources in the environment. The process and rate of scavenging is affected by both biotic and abiotic factors, such as carcass size, habitat, temperature, and seasons. Etymology Scavenger is an alteration of ''scavager,'' from Middle English ''skawager'' meaning "customs collector", from ''skawage'' meaning "customs", from Old North French ''escauwage'' meaning "inspection", from ''schauwer'' meaning "to inspect", of Germanic origin; akin to Old English ''scēawian'' and Germa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
