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Pallid Harrier
The pallid harrier (''Circus macrourus'') is a migratory bird of prey of the harrier subfamily. The scientific name is derived from the Ancient Greek. ''Circus'' is from ''kirkos'' (circle), referring to a bird of prey named for its circling flight ('probably the hen harrier), and ''macrourus'' is "long-tailed", from ''makros'' (long) and ''-ouros'' (-tailed). It breeds in southern parts of eastern Europe and central Asia and Iran and winters mainly in India and southeast Asia. It is a rare but increasing vagrant to Great Britain and western Europe. In 2017 a pair of pallid harriers nested in a barley field in the Netherlands; they raised four chicks, the first recording breeding of the species in the country. In 2019, a pair bred in Spain for the first time. This medium-sized raptor breeds on open plains, bogs and heathland. In winter it is a bird of open country. Description This is a typical harrier, with long wings held in a shallow V in its low flight. It also resemb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Migration
Bird migration is a seasonal movement of birds between breeding and wintering grounds that occurs twice a year. It is typically from north to south or from south to north. Animal migration, Migration is inherently risky, due to predation and mortality. The Arctic tern holds the long-distance migration record for birds, travelling between Arctic breeding grounds and the Antarctic each year. Some species of Procellariiformes, tubenoses, such as albatrosses, circle the Earth, flying over the southern oceans, while others such as Manx shearwaters migrate between their northern breeding grounds and the southern ocean. Shorter migrations are common, while longer ones are not. The shorter migrations include altitudinal migrations on mountains, including the Andes and Himalayas. The timing of migration seems to be controlled primarily by changes in day length. Migrating birds navigate using celestial cues from the Sun and stars, the Earth's magnetic field, and mental maps. Histor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallid Harrier In LRK 01
Pallor is a pale color of the skin that can be caused by illness, emotional shock or Stress (biology), stress, stimulant use, or anemia, and is the result of a reduced amount of hemoglobin, oxyhaemoglobin and may also be visible as pallor of the Conjunctiva, conjunctivae of the eyes on physical examination. Pallor is more evident on the face and Hand#Human anatomy, palms. It can develop suddenly or gradually, depending on the cause. It is not usually clinically significant unless it is accompanied by a general pallor (pale lips, tongue, palms, mouth and other regions with mucous membranes). It is distinguished from similar presentations such as hypopigmentation (lack or loss of skin pigment) or simply a lightly-melanated complexion. Causes * migraine attack or headache * excess estradiol and/or estrone * osteoporosis * emotional response, due to fear, embarrassment, grief, rage * anorexia * anemia, due to blood loss, poor nutrition, or underlying disease such as sickle cell an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of Prey Of Eurasia
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] |
Harriers (birds)
Harrier may refer to: Animals * Harrier (bird), birds in the genus ''Circus'' * Harrier (dog) Media * Harrier Comics, a defunct British publisher * ''Space Harrier'', a video game series Military * Harrier jump jet, an overview of the Harrier family: ** Hawker Siddeley Harrier, 1st generation Harrier ** British Aerospace Sea Harrier, maritime strike/air defence fighter ** McDonnell Douglas AV-8B Harrier II, 2nd generation Harrier ** British Aerospace Harrier II, 2nd generation Harrier used by the UK * Hawker Harrier, experimental biplane torpedo bomber aircraft built in the 1920s Sport * Cross-country runner, sometimes referred to as harriers * Faythe Harriers GAA, Faythe Harriers, an Irish hurling team * Kidderminster Harriers F.C., an English football team * One of the following athletics clubs: ** Belgrave Harriers ** Birchfield Harriers ** Coventry Godiva Harriers ** Croydon Harriers ** Eryri Harriers; see Peris Horseshoe ** Hash House Harriers ** Herne Hill Harriers ** Hol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dutch Birding
''Dutch Birding'', originally subtitled ''Journal of the Dutch Birding Association'', and currently subtitled ''International journal on Palaearctic birds'', is an ornithological magazine published by the Amsterdam-based Dutch Birding Association. It was established in 1979 and its editor-in-chief is Arnoud van den Berg. The magazine has English and Dutch language editions and covers morphology, systematics, occurrence, and distribution of birds in the Benelux, Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ..., and elsewhere in the Palaearctic region. It also publishes contributions on birds in the Asian-Pacific region and other regions. See also *'' Ardea'' – official publication of the Netherlands Ornithologists' Union * List of birds of the Netherlands * List of j ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moorland
Moorland or moor is a type of Habitat (ecology), habitat found in upland (geology), upland areas in temperate grasslands, savannas, and shrublands and the biomes of montane grasslands and shrublands, characterised by low-growing vegetation on Soil pH, acidic soils. Moorland today generally means uncultivated hill land (such as Dartmoor in South West England), but also includes low-lying wetlands (such as Sedgemoor, also South West England). It is closely related to heath, although experts disagree on the exact distinction between these types of vegetation. Generally, moor refers to Highland (geography), highland and high rainfall areas, while heath refers to lowland zones which are more likely to be the result of human activity. Moorland habitats are found mainly in Tropics, tropical Africa, Northern Europe, northern and western Europe, and South America. Most of the world's moorlands are diverse ecosystems. In the extensive moorlands of the tropics, biodiversity can be extremely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird
Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a four-chambered heart, and a strong yet lightweight Bird skeleton, 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 Order (biology), orders. More than half are passerine or "perching" birds. Birds have Bird wing, 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 Flightless bird, loss of flight in some birds, including ratites, penguins, and diverse endemism, endemic island species. The digestive and respiratory systems of birds are also uniquely a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal
A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three Evolution of mammalian auditory ossicles, middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors Genetic divergence, diverged in the Carboniferous Period over 300 million years ago. Around 6,640 Neontology#Extant taxon, extant species of mammals have been described and divided into 27 Order (biology), orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, Mole (animal), moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the Artiodactyl, even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including Felidae, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montagu's Harrier
Montagu's harrier (''Circus pygargus'') is a migratory bird of prey of the harrier family. Its common name commemorates the British naturalist George Montagu. Taxonomy The first formal description of Montagu's harrier was by the Swedish naturalist Carl Linnaeus in 1758, in the tenth edition of his ''Systema Naturae'', under the binomial name ''Falco pygargus''. The genus ''Circus'' was introduced by the French naturalist Bernard Germain de Lacépède in 1799. The genus name is derived from Ancient Greek. ''Circus'' is from ''kirkos'', meaning "circle", referring to a bird of prey named for its circling flight (probably the hen harrier), and ''pygargus'' is Modern Latin derived from the Greek ''pugargos'', from ''puge'', meaning "rump", and ''argos'', meaning "shining white". The species name was formerly used for the hen harrier before Montagu's was identified as a different species. Identification Plumage Sexual dimorphism is particularly apparent in the plumage of thi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plumage
Plumage () is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, there can be different colour morph (zoology), morphs. The placement of feathers on a bird is not haphazard but rather emerges in organized, overlapping rows and groups, and these are known by standardized names. Most birds moult twice a year, resulting in a breeding or ''nuptial plumage'' and a ''basic plumage''. Many ducks and some other species such as the red junglefowl have males wearing a bright nuptial plumage while breeding and a drab ''eclipse plumage'' for some months afterward. The painted bunting's juveniles have two inserted moults in their first autumn, each yielding plumage like an adult female. The first starts a few days after fledging replacing the ''juvenile plumage'' with an ''auxiliary formative plumage''; the second a month o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Of Prey
Birds of prey or predatory birds, also known as (although not the same as) raptors, are hypercarnivorous bird species that actively predation, hunt and feed on other vertebrates (mainly mammals, reptiles and smaller birds). In addition to speed and strength, these predators have bird vision, keen eyesight for detecting prey from a distance or during flight, strong feet with sharp talon (anatomy), talons for grasping or killing prey, and powerful, curved beaks for tearing off flesh. Although predatory birds primarily hunt live prey, many species (such as fish eagles, vultures and condors) also scavenge and eat carrion. Although the term "bird of prey" could theoretically be taken to include all birds that actively hunt and eat other animals, ornithologists typically use the narrower definition followed in this page, excluding many piscivorous predators such as storks, Crane (bird), cranes, herons, gulls, skuas, penguins, and kingfishers, as well as many primarily insectivorous bir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
