|
Shearwater Elgin Area Line
Shearwaters are medium-sized long-winged seabirds in the petrel family Procellariidae. They have a global marine distribution, but are most common in temperate and cold waters, and are pelagic outside the breeding season. Description These tubenose birds fly with stiff wings and use a "shearing" flight technique (flying very close to the water and seemingly cutting or "shearing" the tips of waves) to move across wave fronts with the minimum of active flight. This technique gives the group its English name. Some small species, like the Manx shearwater are cruciform in flight, with their long wings held directly out from their bodies. Behaviour Movements Many shearwaters are long-distance migrants, perhaps most spectacularly sooty shearwaters, which cover distances in excess of from their breeding colony on the Falkland Islands (52°S 60°W) to as far as 70° north latitude in the North Atlantic Ocean off northern Norway. One study found Sooty shearwaters migrating nearly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Shearwater
The great shearwater (''Ardenna gravis'') is a large shearwater in the seabird family Procellariidae. It breeds colonially on rocky islands in the south Atlantic. Outside the breeding season it ranges widely in the Atlantic. Taxonomy The great shearwater was formally described in 1818 by the Irish naturalist Bernard O'Reilly and given the binomial name ''Procellaria gravis''. The great shearwater is now placed in the genus ''Ardenna'' that was introduced in 1853 by Ludwig Reichenbach. The genus name ''Ardenna'' was used to refer to a seabird by Italian naturalist Ulisse Aldrovandi in 1603. The specific epithet ''gravis'' is Latin meaning "heavy" or "weighty". The species is monotypic: no subspecies are recognised. Description This shearwater is 43–51 cm (16.9–20.1 in) in length with a 105–122 cm (3.5–4.0 ft) wingspan. It is identifiable by its size, dark upper parts, and white under parts, with the exception of a brown belly patch and dark shoulder markings. It has ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of Tasmania , established_title2 = Federation , established_date2 = 1 January 1901 , named_for = Abel Tasman , demonym = , capital = Hobart , largest_city = capital , coordinates = , admin_center = 29 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryan's Shearwater
Bryan's shearwater (''Puffinus bryani'') is a species of shearwater that may occur around the Hawaiian Islands. It is the smallest species of shearwater and is black and white with a bluish gray beak and blue tarsi. First collected in 1963 and thought to be a little shearwater (''Puffinus assimilis'') it was determined using DNA analysis to be distinct in 2011. It is rare and possibly threatened and there is little information on its breeding or non-breeding ranges. The species is named after Edwin Horace Bryan Jr. a former curator of the B. P. Bishop Museum at Honolulu. On February 7, 2012, DNA tests on six specimens found in Ogasawara alive and dead between 1997 and 2011 determined that they were Bryan's shearwaters. It is assumed that Bryan's shearwaters still survive on some of the uninhabited Bonin Islands. In 2015 a small breeding colony of Bryan's shearwaters was found on the island of Higashijima in Japan Japan ( ja, 日本, or , and formally , ''Nihonko ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balearic Shearwater
The Balearic shearwater (''Puffinus mauretanicus'') is a medium-sized shearwater in the seabird family ''Procellariidae''. ''Puffinus'' is a New Latin loanword based on the English "puffin" and its variants, that referred to the cured carcass of the fat nestling of the Manx shearwater, a former delicacy. The specific ''mauretanicus'' refers to Mauretania, an old name for an area of North Africa roughly corresponding to Morocco and Algeria. Taxonomy The Balearic shearwater was formerly described in 1921 by the English ornithologist Percy Lowe. He treated it as a subspecies of the Manx shearwater and coined the trinomial name ''Puffinus puffinus mauretanicus''. The Balearic shearwater was long regarded a subspecies of the Manx shearwater. Following an initial split, it was held to be a subspecies of the "Mediterranean shearwater" for nearly ten more years, until it was resolved to be a distinct species, separate from the yelkouan shearwater. It is the last taxon of the ''Puffinus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christmas Shearwater
The Christmas shearwater or ''aoū'' (''Puffinus nativitatis'') is a medium-sized shearwater of the tropical Central Pacific. It is a poorly known species due to its remote nesting habits, and it has not been extensively studied at sea either.Seto, N.W.H. (2001): Christmas Shearwater (''Puffinus nativitatis''). ''In:'' Poole, A. & Gill, F. (eds.): ''The Birds of North America'' 561. Academy of Natural Sciences, Philadelphia, PA & American Ornithologists' Union, Washington, D.C. (requires subscription) It is one member of a very ancient lineage of the small ''Puffinus'' species. Its only close living relative is the Galápagos shearwater (''P. subalaris''). Taxonomy The species was described and given its current binomial name by the American naturalist Thomas Hale Streets in 1877. A genetic analysis using mitochondrial DNA has shown that the closest living relative is the Galápagos shearwater (''Puffinus subalaris''). Description The Christmas shearwater is a slender-bodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pseudobulweria
__NOTOC__ ''Pseudobulweria'' is a genus of seabirds in the family Procellariidae. They have long been retained with the gadfly petrel genus ''Pterodroma'' despite morphological differences. Mitochondrial DNA cytochrome ''b'' sequence analysis has confirmed the split out of ''Pterodroma'' and places the genus closer to shearwaters. They thus represent either a plesiomorphic lineage still sharing some traits of the ancestral Procellariidae with the gadfly petrels, or convergent evolution of a shearwater to the ecological niche of gadfly petrels. They are a poorly known and highly endangered group: 3 of the 4 extant species are listed by the IUCN as critically endangered. The Tahiti petrel ('' Pseudobulweria rostrata'') is the most familiar and the best studied. Description and ecology They are generally largish darkish petrels, but may have white undersides. They are long-winged and fly about with rather leisurely wingbeats and soar a lot. Though they are attracted by chum, '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bulweria
''Bulweria'' is a genus of seabirds in the family Procellariidae named after English naturalist James Bulwer. The genus has two extant species, Bulwer's petrel and Jouanin's petrel . A third species, the Olson's petrel, became extinct in the early 16th century; it is known only from skeletal remains. Bulwer's petrel ranges in the Atlantic, Indian and Pacific Oceans, whereas Joaunin's petrel is confined to the northwestern Indian Ocean. Olson's petrel is known from the Atlantic. ''Bulweria'' petrels have long been considered related to the gadfly petrels in the genus ''Pterodroma'', but recent mtDNA cytochrome ''b'' sequence analysis has proven them to be closely related to the shearwaters in the genus ''Puffinus'' and especially the ''Procellaria'' petrels. Taxonomy The genus ''Bulweria'' was introduced in 1843 by the French naturalist Charles Lucien Bonaparte to accommodate Bulwer's petrel. The petrel had originally been placed in the genus ''Procellaria''. The genus nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procellaria
Procellaria is a genus of Southern Ocean long-winged seabirds related to prions, and within the order Procellariiformes. The black petrel (''Procellaria parkinsoni'') ranges in the Pacific Ocean, and as far north as Central America. The spectacled petrel (''Procellaria conspicillata'') is confined to the Atlantic Ocean, and the Westland petrel (''Procellaria westlandica'') to the Pacific Ocean. The white-chinned (''Procellaria aequincotialis'') and grey petrel (''Procellaria cinerea'') range throughout the higher latitudes of the Southern Ocean. Taxonomy The genus ''Procellaria'' was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his ''Systema Naturae''. The name is from the Latin ''procella'' meaning "storm" or "gale". The type species was designated as the white-chinned petrel by George Robert Gray in 1840. The genus ''Procellaria'' is within the Procellariinae clade, which includes the Shearwaters (a monophyletic group comprising ''P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whale
Whales are a widely distributed and diverse group of fully aquatic placental marine mammals. As an informal and colloquial grouping, they correspond to large members of the infraorder Cetacea, i.e. all cetaceans apart from dolphins and porpoises. Dolphins and porpoises may be considered whales from a formal, cladistic perspective. Whales, dolphins and porpoises belong to the order Cetartiodactyla, which consists of even-toed ungulates. Their closest non-cetacean living relatives are the hippopotamuses, from which they and other cetaceans diverged about 54 million years ago. The two parvorders of whales, baleen whales (Mysticeti) and toothed whales (Odontoceti), are thought to have had their last common ancestor around 34 million years ago. Mysticetes include four extant (living) families: Balaenopteridae (the rorquals), Balaenidae (right whales), Cetotheriidae (the pygmy right whale), and Eschrichtiidae (the grey whale). Odontocetes include the Monodontidae (beluga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muttonbirding
Muttonbirding is the seasonal harvesting of the chicks of petrels, especially shearwater species, for food, oil and feathers by recreational or commercial hunters. Such hunting of petrels and other seabirds has occurred in various locations since prehistoric times, and there is evidence that many island populations have become extinct as a result. More recently ‘muttonbirding’ usually refers to the regulated and sustainable harvesting of shearwaters in Australia and New Zealand.Atholl Anderson, Anderson, Atholl. (1998). Origins of Procellariidae Hunting in the Southwest Pacific. ''International Journal of Osteoarchaeology'' 6(4): 403–410. These include the short-tailed shearwater, also known as the yolla or Australian muttonbird, in Bass Strait, Tasmania, as well as the sooty shearwater, also known as the titi or New Zealand muttonbird, on several small islands known as the Muttonbird Islands, scattered around Stewart Island in the far south of New Zealand. Australia Licens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burrow Nest
A bird nest is the spot in which a bird lays and incubates its eggs and raises its young. Although the term popularly refers to a specific structure made by the bird itself—such as the grassy cup nest of the American robin or Eurasian blackbird, or the elaborately woven hanging nest of the Montezuma oropendola or the village weaver—that is too restrictive a definition. For some species, a nest is simply a shallow depression made in sand; for others, it is the knot-hole left by a broken branch, a burrow dug into the ground, a chamber drilled into a tree, an enormous rotting pile of vegetation and earth, a shelf made of dried saliva or a mud dome with an entrance tunnel. The smallest bird nests are those of some hummingbirds, tiny cups which can be a mere across and high. At the other extreme, some nest mounds built by the dusky scrubfowl measure more than in diameter and stand nearly tall. The study of birds' nests is known as ''caliology''. Not all bird species build ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Bulweria")
