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Sedge Warbler
The sedge warbler (''Acrocephalus schoenobaenus'') is an Old World warbler in the genus '' Acrocephalus''. It is a medium-sized warbler with a brown, streaked back and wings and a distinct pale supercilium. Sedge warblers are migratory, crossing the Sahara to get from their European and Asian breeding grounds to spend winter in Africa. The male's song is composed of random chattering phrases and can include mimicry of other species. The sedge warbler is mostly insectivorous. Taxonomy The sedge warbler was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae'' under the binomial name ''Motacilla schoenobaenus''. The species is now placed in the genus '' Acrocephalus'' that was introduced in 1811 by Johann Andreas Naumann and his son Johann Friedrich Naumann. British ornithologists did not distinguish the species from the Eurasian reed warbler until the 18th century. The genus name ''Acrocephalus'' is from Ancient Gree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otmoor RSPB Reserve
Otmoor RSPB Reserve is a nature reserve, managed by the RSPB, between Beckley and Oddington, within the wider area of Otmoor, in Oxfordshire, England. The reserve was established in 1997 and restored large areas of marshland from what had previously been farmland. The RSPB reserve covers around . Otmoor is primarily wetland and in winter provides a home to thousands of waterfowl. It is increasingly becoming a wintering ground for thousands of wildfowl and waders. Over a thousand wigeon and teal have been recorded, while birds of prey such as merlins and peregrines are regularly seen. Large areas of Otmoor have benefited from extensive agriculture using traditional methods, resulting in good numbers of songbirds that are otherwise declining in the UK, including bullfinch, skylark, reed bunting, grasshopper warbler and European turtle dove. Spring and autumn both produce good numbers of passage migrants, including waders in the spring and common redstarts and whinchats in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Friedrich Naumann
Johann Friedrich Naumann (14 February 1780 – 15 August 1857) was a German scientist, engraver, and editor. He is regarded as the founder of scientific ornithology in Europe. He published ''The Natural History of German Birds'' (1820–1844) and ''The Eggs of German Birds'' (1818–1828). His father Johann Andreas Naumann (1744–1826) was a naturalist, and his brother Carl Andreas Naumann (1786–1854) was also an ornithologist. The German ornithological society named its journal ''Naumannia''. The lesser kestrel (''Falco naumanni'') is also named for him. Biography Johann Friedrich Naumann was born in Ziebigk, about 10 km southeast of Köthen, on 14 February 1780, as the son of Johann Andreas Naumann, a well-known natural historian. After attending school at Dessau, he returned home and devoted himself to the study of agriculture, botany, geology, and ornithology. His later work was devoted more exclusively to the ornithology of Germany. In 1822 he published his ''Na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pallas's Grasshopper Warbler
Pallas's grasshopper warbler (''Helopsaltes certhiola''), also known as the rusty-rumped warbler, is an Old World warbler in the grass warbler genus ''Helopsaltes''. It breeds in the eastern Palearctic: from the Altai Mountains, Mongolia and Transbaikalia to northeastern China, the Korean Peninsula, and islands in the Sea of Okhotsk (Sakhalin and Kuril Islands). It is migratory, wintering from India eastward to Indonesia. It is a rare migrant in Sri Lanka. Etymology This bird was named after the German zoologist Peter Simon Pallas. The specific ''certhiola'' is a diminutive from the genus ''Certhia'', the treecreepers. The sixth edition of '' Clements Checklist'' Clements, James F. (2007) ''The Clements Checklist of Birds of the World'' Cornell University Press refers to this species as "Pallas's warbler", a name more commonly used for '' Phylloscopus proregulus.'' Habitat This small passerine bird is found in tall grass with some thicker vegetation, usually close to water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moustached Warbler
The moustached warbler (''Acrocephalus melanopogon'') is an Old World warbler Old World warblers are a large group of birds formerly grouped together in the bird family Sylviidae. The family held over 400 species in over 70 genera, and were the source of much taxonomic confusion. Two families were split out initially, the ci ... in the genus ''Acrocephalus (bird), Acrocephalus''. It breeds in southern Europe and southern Palearctic, temperate Asia with a few breeding in north-west Africa. It is partially bird migration, migratory. South-west European birds are resident, south-east European birds winter in the Mediterranean breeding range, and the Asiatic race migrates to Arabian Peninsula, Arabia, India and Pakistan. It is scarce north of its range, but has occurred as a very rare vagrant as far as Poland and Denmark. There have been a few reports from Great Britain, including a pair breeding in Cambridgeshire in 1946, but these records have recently been removed from the officia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Warbler
The aquatic warbler (''Acrocephalus paludicola'') is an Old World warbler in the genus '' Acrocephalus''. It breeds in temperate eastern Europe and western Asia, with an estimated population of 11,000-15,000 pairs. It is migratory, wintering in west Africa. After many years of uncertainty, the wintering grounds of much of the European population were finally discovered in Djoudj National Bird Sanctuary, Senegal, with between 5,000 and 10,000 birds present at this single site. Its south-westerly migration route means that it is regular on passage as far west as Great Britain and Ireland. This small passerine bird is a species found in wet sedge beds with vegetation shorter than . Drainage has meant that this species has declined, and its stronghold is now the Polesie region of eastern Poland and south Belarus, where 70% of the world's population breeds. 3–5 eggs are laid in a nest in low vegetation. This species is highly promiscuous, with most males and females having offspring ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cloaca
In animal anatomy, a cloaca ( ), plural cloacae ( or ), is the posterior orifice that serves as the only opening for the digestive, reproductive, and urinary tracts (if present) of many vertebrate animals. All amphibians, reptiles and birds, and a few mammals (monotremes, tenrecs, golden moles, and marsupial moles), have this orifice, from which they excrete both urine and feces; this is in contrast to most placental mammals, which have two or three separate orifices for evacuation. Excretory openings with analogous purpose in some invertebrates are also sometimes referred to as cloacae. Mating through the cloaca is known as cloacal copulation, commonly referred to as cloacal kiss. The cloacal region is also often associated with a secretory organ, the cloacal gland, which has been implicated in the scent-marking behavior of some reptiles, marsupials, amphibians, and monotremes. Etymology The word is from the Latin verb ''cluo'', "(I) cleanse", thus the noun ''cloaca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brood Patch
A brood patch is a patch of featherless skin on the underside of birds during the nesting season. Feathers act as inherent insulators, and prevent efficient incubation. Birds have solved this evolutionary dilemma by developing dedicated brood patches. This patch of skin is well supplied with blood vessels at the surface, enabling heat transfer to the eggs when incubating. In most species, the feathers in the region shed automatically, but ducks and geese may pluck and use their feathers to line the nest. Feathers regrow sooner after hatching in precocial birds than for those that have altricial young. Upon settling on a nest, birds will shift in a characteristic side to side manner to ensure full contact of the brood patch with eggs or young. The positions of brood patches can vary. Many have a single brood patch in the middle of the belly, while some shorebirds have one patch on each side of the belly. Gulls and Galliformes may have three brood patches. Pelicans, penguins, boobi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Ringing
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 swimming. Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plumage
Plumage ( "feather") 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 morphs. The placement of feathers on a bird is not haphazard, but rather emerge 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 or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Trust For Ornithology
The British Trust for Ornithology (BTO) is an organisation founded in 1932 for the study of birds in the British Isles. The Prince of Wales has been patron since October 2020. History Beginnings In 1931 Max Nicholson wrote: In the United States, Hungary, Holland and elsewhere a clearing-house for research is provided by the state: in this country such a solution would be uncongenial, and we must look for some alternative centre of national scope not imposed from above but built up from below. An experiment on these lines has been undertaken at Oxford since the founding of the Oxford Bird Census in 1927 .. The scheme now has a full-time director, Mr W.B.Alexander. ..It is intended to put this undertaking on a permanent footing and to build it up as a clearing-house for bird-watching results in this country. This led to a meeting at the British Museum (Natural History) in February 1932, which in turn led to the foundation of an organisation to develop the Oxford scheme. The n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics ( morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. In contrast, an oligotypic taxon contains more than one but only a very few subordinate taxa. Examples Just as the term ''monotypic'' is used to describe a taxon including only one subdivision, the contained taxon can also be referred to as monotypic within the higher-level taxon, e.g. a genus monotypic within a family. Some examples of monotypic groups are: Plants * In the order Amborellales, there is only one family, Amborellaceae and there is only one genus, '' Amborella'', and in this genus there is only one species, namely ''Amborella trichopoda. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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