|
Sitta Frontalis
The velvet-fronted nuthatch (''Sitta frontalis'') is a small passerine bird in the nuthatch family Sittidae found in southern Asia from Nepal, India, Sri Lanka and Bangladesh east to south China and Indonesia. Like other nuthatches, it feeds on insects in the bark of trees, foraging on the trunks and branches and their strongly clawed toes allow them to climb down tree trunks or move on the undersides of horizontal branches. They are found in forests with good tree cover and are often found along with other species in mixed-species foraging flocks. Adult males can be told apart by the black stripe that runs behind and above the eyes. They have a rapid chipping call note. They breed in tree cavities and holes, often created by woodpeckers or barbets. Description The velvet-fronted nuthatch has the typical nuthatch shape, short tail and powerful bill and feet. It is 12.5 cm long. It is violet-blue above, with lavender cheeks, beige underparts, yellow eyes, and a wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VF Nuthatch
Vf or VF may stand for: Arts and entertainment *''Virtua Fighter'', a series of fighting games by Sega * Variable fighter, in the ''Macross'' manga series Businesses and organizations * VF Corporation, a clothing company * Valuair, an airline based in Singapore, IATA code VF * Vodafone, a UK-based mobile/cell phone network * Vaterländische Front, a former Austrian political party * ''Värmlands Folkblad'', a Swedish-language daily newspaper * VinFast, an automobile manufacturer from Vietnam Science, technology, and mathematics Biology and medicine * Ventricular fibrillation, a cardiac arrhythmia * Visual field * Vocal fold Other uses in science, technology, and mathematics * Forward Voltage of a diode * Vector field, in mathematics * Final velocity (vf) in physics * Voice Frequency (300–3000 Hz) * a radio call sign format used in Canada to denote low-power broadcast transmitters, usually but not always exempt from conventional broadcast licensing Other uses * Squadron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sitta Oenochlamys
The sulphur-billed nuthatch (''Sitta oenochlamys'') is a species of bird in the family Sittidae. It is endemic to the Philippines. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane forest. It is commonly found in mixed flocks along with Blue-headed fantails, sunbirds, flowerpeckers and other small forest birds. References sulphur-billed nuthatch Endemic birds of the Philippines sulphur-billed nuthatch The sulphur-billed nuthatch (''Sitta oenochlamys'') is a species of bird in the family Sittidae. It is endemic to the Philippines. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical moist montane for ... Taxonomy articles created by Polbot {{Certhioidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Racket-tailed Drongo
The greater racket-tailed drongo (''Dicrurus paradiseus'') is a medium-sized Asian bird which is distinctive in having elongated outer tail feathers with webbing restricted to the tips. They are placed along with other drongos in the family Dicruridae. They are conspicuous in the forest habitats often perching in the open and by attracting attention with a wide range of loud calls that include perfect imitations of many other birds. One hypothesis suggested is that these vocal imitations may help in the formation of mixed-species foraging flocks, a feature seen in forest bird communities where many insect feeders forage together. These drongos will sometimes steal insect prey caught or disturbed by other foragers in the flock and another idea is that vocal mimicry helps them in diverting the attention of smaller birds to aid their piracy. They are diurnal but are active well before dawn and late at dusk. Owing to their widespread distribution and distinctive regional variation, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodpecker
Woodpeckers are part of the bird family Picidae, which also includes the piculets, wrynecks, and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar, and the extreme polar regions. Most species live in forests or woodland habitats, although a few species are known that live in treeless areas, such as rocky hillsides and deserts, and the Gila woodpecker specialises in exploiting cacti. Members of this family are chiefly known for their characteristic behaviour. They mostly forage for insect prey on the trunks and branches of trees, and often communicate by drumming with their beaks, producing a reverberatory sound that can be heard at some distance. Some species vary their diet with fruits, birds' eggs, small animals, tree sap, human scraps, and carrion. They usually nest and roost in holes that they excavate in tree trunks, and their abandoned holes are of importance to other cavity-nesting birds. They sometimes com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonneratia
''Sonneratia'' is a genus of plants in the family Lythraceae. Formerly the Sonneratia were placed in a family called Sonneratiaceae which included both the ''Sonneratia'' and the ''Duabanga'', but these two are now placed in their own monotypic subfamilies of the family ''Lythraceae''. The genus was also named ''Blatti'' by James Edward Smith, but ''Sonneratia'' had botanical nomenclature priority. ''Sonneratia'' species are mangrove trees. The germination is viviparous. Species The genus ''Sonneratia'' has the following species: *'' Sonneratia alba'' Sm. *'' Sonneratia apetala'' Banks *''Sonneratia caseolaris'' (L.) Engl. *'' Sonneratia griffithii'' Kurz *'' Sonneratia × gulngai'' N.C.Duke *'' Sonneratia × hainanensis'' W.C.Ko, E.Y.Chen & W.Y.Chen *'' Sonneratia lanceolata'' Blume *'' Sonneratia ovata'' Backer *'' Sonneratia × urama'' N.C.Duke See also *Mangroves References *Graham, S. A., Thorne & Reveal (May 1998) "Validation of subfamily names in Lythraceae" ''Ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phoresis
Phoresis or phoresy is a non-permanent, commensalistic interaction in which one organism (a phoront or phoretic) attaches itself to another (the host) solely for the purpose of travel. Phoresis has been observed directly in ticks and mites since the 18th century, and indirectly in fossils 320 million years old. It is not restricted to arthropods or animals; plants with seeds that disperse by attaching themselves to animals are also considered to be phoretic. ''Phoresis'' is rooted in the Greek words ''phoras'' (bearing) and ''phor'' (thief). The term, originally defined in 1896 as a relationship in which the host acts as a vehicle for its passenger, clashed with other terminology being developed at the time, so constraints on the length of time, feeding and ontogeny are now considered. Phoresis is used as a strategy for dispersal, seasonal migration, transport to new host/habitat escaping ephemeral habitats, and reducing inbreeding depression. In addition to the bene ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brueelia
''Brueelia'' (formerly spelled ''Brüelia'') is a genus of lice in the family Philopteridae, containing the following species: * '' Brueelia amandavae'' Rekasi & Saxena, 2005 * '' Brueelia astrildae'' Tendeiro & Mendes, 1994 * '' Bureelia cantans'' Sychra, 2010 * '' Brueelia eichleri'' Lakshminarayana, 1969 * '' Brueelia fasciata'' Sychra, 2010 * '' Brueelia lonchurae'' Tendeiro & Mendes, 1994 * '' Brueelia munia'' Ansari * '' Brueelia plocea'' Lakshminarayana * '' Brueelia senegala'' Sychra, 2010 * '' Brueelia stenozona'' (Kellogg & Shapman, 1902) References Lice {{Louse-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tso-hsin Cheng
Tso-hsin Cheng (郑作新 also transcribed as Zheng Zuoxin) (18 November 1906 – 27 June 1998) was a Chinese ornithologist known for his seminal work on the birds of China and mentoring a generation of researchers. Educated in the United States, he chose to stay in China after the Second World War while many of his academic colleagues moved to Taiwan. He was severely punished during the Cultural Revolution despite being a member of the Communist Party. Biography Early life Cheng was born in Fujian on November 18, 1906, and grew up with an interest in the local birds. His mother died of tuberculosis when he was very young and he was taken care of mostly by his grandmother. His father was one of the few Chinese with a higher education and knew English. His father taught him to speak English. As a young boy he was weak and his father encouraged the boy to take up sports. Cheng hiked in the mountains, played tennis and even became a champion 100 m sprinter. His early naturalist int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kra Isthmus
The Kra Isthmus ( th, คอคอดกระ, ) in Thailand is the narrowest part of the Malay Peninsula. The western part of the isthmus belongs to Ranong Province and the eastern part to Chumphon Province, both in Southern Thailand. The isthmus is bordered to the west by the Andaman Sea and to the east by the Gulf of Thailand. The Kra Isthmus marks the boundary between two sections of the mountain chain which runs from Tibet through the Malay peninsula. The southern part is the Phuket Range, which is a continuation of the Tenasserim Hills, extending further northwards for over beyond the Three Pagodas Pass. The Kra Isthmus is in the Tenasserim-South Thailand semi-evergreen rain forests ecoregion. Dipterocarps are the dominant trees in the ecoregion. Pacific War On 8 December 1941 local time, the Imperial Japanese army landed in Songkhla, invading Thailand. Because of the International Date Line, this actually occurred hours before the 7 December (Hawaii time) att ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Koelz
Walter Norman Koelz (September 11, 1895, Waterloo, Michigan – September 24, 1989) was an American zoologist and museum collector. Walter Koelz's parents were immigrants from the Black Forest region of Germany, and his father was a village blacksmith in Waterloo. Walter Koelz studied zoology and received the degree of Doctor of Philosophy from the University of Michigan in 1920. In 1925 he joined the McMillan Expedition to the American Arctic. He also studied whitefishes during his work at the University of Michigan at the Institute for Fisheries Research. He was offered a post with the Himalayan Research Institute of the Roerich Museum in 1930. He visited Naggar in Kulu, in May 1930, to begin botanical explorations. While collecting he met Thakur Rup Chand who joined him in his efforts. Koelz would work with Chand for over thirty years. Koelz returned to Michigan in 1932, but his interest in Tibetan culture led to his appointment as a Research Fellow on the Charles L. Freer Fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergmann's Rule
Bergmann's rule is an ecogeographical rule that states that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions. Bergmann's rule only describes the overall size of the animals, but does not include body parts like Allen's rule does. Although originally formulated in relation to species within a genus, it has often been recast in relation to populations within a species. It is also often cast in relation to latitude. It is possible that the rule also applies to some plants, such as '' Rapicactus''. The rule is named after nineteenth century German biologist Carl Bergmann, who described the pattern in 1847, although he was not the first to notice it. Bergmann's rule is most often applied to mammals and birds which are endotherms, but some researchers have also found evidence for the rule in studies of ectothermic species, such as the ant ''L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
