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Tyto Gigantea - Tibiotarsus
''Tyto'' is a genus of birds consisting of true barn owls, grass owls and masked owls that collectively make up all the species within the subfamily Tytoninae of the barn owl family, Tytonidae. Taxonomy The genus ''Tyto'' was introduced in 1828 by the Swedish naturalist Gustaf Johan Billberg with the western barn owl as the type species. The name is from the Ancient Greek ''tutō'' meaning "owl". The barn owl (''Tyto alba'') was formerly considered to have a global distribution with around 28 subspecies. In the list of birds maintained by Frank Gill, Pamela Rasmussen and David Donsker on behalf of the International Ornithological Committee (IOC) the barn owl is now split into four species: the western barn owl (''Tyto alba'') (10 subspecies), the American barn owl (''Tyto furcata'') (12 subspecies), the eastern barn owl (''Tyto javanica'') (7 subspecies) and the Andaman masked owl (''Tyto deroepstorffi''). This arrangement is followed here. Some support for this split was provide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Grass Owl
The African grass owl (''Tyto capensis'') is a species of owl in the barn owl family, Tytonidae. Description The African grass owl resembles the barn owl and has a heart shaped whitish-cream facial disc, with a narrow yellowish-buff rim which is densely spotted dark. The eyes are brownish-black, and the bill is whitish to pale pink. The entire upperparts from the crown to the lower back and wing-coverts are a uniform sooty blackish-brown, with scattered small white spots and greyish flecks. The primary feathers and secondary feathers are pale brownish-grey with dark bars and yellow bases. The short tail has uniform brown central feathers fading to paler, almost white, outer feathers which show about four dark bars. The underparts vary in colour from whitish to buff marked with dark spots. The legs have whitish feathers which extend to the lower third of the tarsi. The lower leg and feet are slightly bristled and coloured pale yellowish-grey. The body length is , the wing len ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Ornithological Committee
The International Ornithologists' Union, formerly known as the International Ornithological Committee, is a group of about 200 international ornithologists, and is responsible for the International Ornithological Congress and other international ornithological activities, undertaken by its standing committees. International Ornithological Congress The International Ornithological Congress series forms the oldest and largest international series of meetings of ornithologists. It is organised by the International Ornithologists' Union. The first meeting was in 1884; subsequent meetings were irregular until 1926 since when meetings have been held every four years, except for two missed meetings during and in the immediate aftermath of the Second World War. Meetings See also * '' Birds of the World: Recommended English Names'', a book written by Frank Gill Frank Gill may refer to: * Frank Gill (Australian footballer) (1908–1970), Australian rules footballer with Carlton * Frank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greater Sooty Owl
The greater sooty owl (''Tyto tenebricosa'') is a medium to large owl found in south-eastern Australia, Montane rainforests of New Guinea and have been seen on Flinders Island in the Bass Strait. The lesser sooty owl (''T. multipunctata''), is sometimes considered to be conspecific with this species, in which case they are then together referred to as sooty owls. It is substantially smaller and occurs in the wet tropics region of North Queensland, Australia. Description Greater sooty owls have a finely white spotted head with scattered white spots on the wings. The females are lighter colored than the males. They appear to be the heaviest of the living species in the barn owl family, however the Tasmanian subspecies of the Australian masked owl is larger still. The females' length is and weighs . The smaller male has a length of and weighs . The wing length is 30–40 cm. The large dark eyes are set in a round large facial disk. The facial disk is dark gray-silver or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Grass Owl
The eastern grass owl (''Tyto longimembris''), also known as Chinese grass owl or Australian grass owl, is a species of owl in the family Tytonidae. They feed predominantly on small rodents. Though some authorities consider this owl to be conspecific with the African grass owl, ''T. capensis'', other consider it to be a valid species. Description The eastern grass owl is a medium-sized owl, similar in size to the barn owl. Adult males measure from in length, while the larger females can measure from . The wingspan is from . The female weighs while the male weighs . They have dark brown or tan upper parts with pale spots. They have black and tan bars on its wings and a very pale beak, feathered legs, and dark brown eyes. Like all ''Tyto'' owls, it has a heart-shaped facial disk with brown buff and a white bordering. Call The eastern grass owl's primary call is like many other tyto owls. A loud, hissing screech but the grass owl's screech is louder than a barn owl's but quieter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minahasa Masked Owl
The Minahasa masked owl (''Tyto inexspectata''), also known as the Minahasa barn owl, Sulawesi owl or Sulawesi golden owl, is a barn owl endemic to the island of Sulawesi, Indonesia. The name is derived from the Minahassa Peninsula The Minahasa Peninsula, also spelled Minahassa, is one of the four principal peninsulas on the Indonesian island of Sulawesi. It stretches north from the central part of the island, before turning to the east and forming the northern boundary of ..., where it was first described as a breeding bird; however, it is also known to live in north-central Sulawesi. The Minahasa masked owl has short wings with a wingspan of 240–250 mm well suited to its habitat in deep forests. It appears to prefer undisturbed or lightly disturbed rainforest at altitudes of 100–1,600 m. As the primary lowland forests on the Minahasa peninsula has been destroyed, the survival of the species depends on the more inaccessible montane forests. The species is known to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Masked Owl
The Australian masked owl (''Tyto novaehollandiae'') is a barn owl of Southern New Guinea and the non-desert areas of Australia. Taxonomy Described subspecies of ''Tyto novaehollandiae'' include: * ''T. n. calabyi'' I.J. Mason, 1983, (southern New Guinea) * ''T. n. castanops'' (Gould, 1837), Tasmanian masked owl (Tasmania and introduced to Lord Howe Island) * ''T. n. galei'' Mathews, 1914, (Cape York Peninsula) * ''T. n. kimberli'' (Mathews, 1912), Northern masked owl (northern mainland Australia) * ''T. n. melvillensis'' Mathews, 1912, (Tiwi Islands) * ''T. n. novaehollandiae'' (Stephens, 1826), (southern mainland Australia) * ''T. n. troughtoni'' N.W. Cayley, 1931, cave-nesting masked owl (Nullarbor Plain, validity doubtful) Description Brown feathers surround a white, heart-shaped mask. Their dorsal plumage is brown, aside from light gray spots on the upper back. Their front is white with brown spots. Their eye color varies from black to dark brown. The species have sexua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manus Masked Owl
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The Manus masked owl (''Tyto manusi'') is a barn owl endemic to Manus Island in the Admiralty Islands. Some authors consider it a subspecies of Australian masked owl ''(Tyto novaehollandiae)''. It is a poorly known forest-dwelling species, which is rarely seen. Comparison with the closely related Australian masked owl indicates it is likely to have large territories, and the population may be smaller than 1000. References External linksBirdLife Species Factsheet. Manus masked owl Birds of the Admiralty Islands Manus masked owl The Manus masked owl (''Tyto manusi'') is a barn owl endemic to Manus Island in the Admiralty Islands. Some authors consider it a subspecies of Australian masked owl ''(Tyto novaehollandiae)''. It is a poorly known forest-dwelling species, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BirdLife International
BirdLife International is a global partnership of non-governmental organizations that strives to conserve birds and their habitats. BirdLife International's priorities include preventing extinction of bird species, identifying and safeguarding important sites for birds, maintaining and restoring key bird habitats, and empowering conservationists worldwide. It has a membership of more than 2.5 million people across 116 country partner organizations, including the Royal Society for the Protection of Birds, the Wild Bird Society of Japan, the National Audubon Society and American Bird Conservancy. BirdLife International has identified 13,000 Important Bird and Biodiversity Areas and is the official International Union for Conservation of Nature’s Red List authority for birds. As of 2015, BirdLife International has established that 1,375 bird species (13% of the total) are threatened with extinction ( critically endangered, endangered or vulnerable). BirdLife International p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Clements Checklist Of Birds Of The World
''The Clements Checklist of Birds of the World'' is a book by Jim Clements which presents a list of the bird species of the world. The most recent printed version is the sixth edition (2007), but has been updated yearly, the last version in 2022, and is published by Cornell University Press. Previous editions were published by the author's own imprint, Ibis Publishing. The Cornell Lab of Ornithology has provided annual updates since then, usually in August, and the most recent version is available online in several formats. These updates reflect the ongoing changes to bird taxonomy based on published research. ''Clements'' is the official list used by the American Birding Association for birds globally. eBird eBird is an online database of bird observations providing scientists, researchers and amateur naturalists with real-time data about bird distribution and abundance. Originally restricted to sightings from the Western Hemisphere, the project ... also uses the ''Clem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Locus (genetics)
In genetics, a locus (plural loci) is a specific, fixed position on a chromosome where a particular gene or genetic marker is located. Each chromosome carries many genes, with each gene occupying a different position or locus; in humans, the total number of protein-coding genes in a complete haploid set of 23 chromosomes is estimated at 19,000–20,000. Genes may possess multiple variants known as alleles, and an allele may also be said to reside at a particular locus. Diploid and polyploid cells whose chromosomes have the same allele at a given locus are called homozygous with respect to that locus, while those that have different alleles at a given locus are called heterozygous. The ordered list of loci known for a particular genome is called a gene map. Gene mapping is the process of determining the specific locus or loci responsible for producing a particular phenotype or biological trait. Association mapping, also known as "linkage disequilibrium mapping", is a method of ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetic
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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