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Calonectris
''Calonectris'' is a genus of seabirds. The genus name comes from Ancient Greek ''kalos'', "good" and ''nectris'', "swimmer". The genus comprises four large shearwaters. There are two other shearwater genera, ''Puffinus'', which comprises 21 small to medium-sized shearwaters, and ''Ardenna'' with 7 larger species. The species in this group are long-winged birds, dark brown or grey-brown above, and mainly white below. They are pelagic outside the breeding season. They are most common in temperate and cold waters. Like most other tubenose birds, they use a shearing flight technique to move across wave fronts with the minimum of active flight, but fly with a more relaxed, fluid, flexible wing action than the other shearwaters in ''Puffinus'' and ''Ardenna''. Svensson, L., Mullarney, K., & Zetterström, D. (2022) ''Collins Bird Guide'', ed. 3. , pages 68-69 ''Calonectris'' shearwaters are long-distance migrants. The streaked shearwater disperses from its east Asian breeding isl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cory's Shearwater
Cory's shearwater (''Calonectris borealis'') is a large shearwater in the seabird family Procellariidae. It breeds colonially on the archipelago of the Azores in the eastern Atlantic. Outside the breeding season it ranges widely in the Atlantic. It was formerly considered to be conspecific with Scopoli's shearwater. Taxonomy Cory's shearwater was formally described in 1881 by the American ornithologist Charles B. Cory from a specimen collected off Chatham Island, Massachusetts. He coined the binomial name ''Puffinus borealis''. Cory's shearwater is now placed in the genus '' Calonectris'' that was introduced in 1915 by the ornithologists Gregory Mathews and Tom Iredale. The genus name combines the Ancient Greek ''kalos'' meaning "good" or "noble" with the genus name ''Nectris'' that was used for shearwaters by the German naturalist Heinrich Kuhl in 1820. The name ''Nectris'' comes from the Ancient Greek word ''nēktris'' meaning "swimmer". The specific epithet ''borealis'' is La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scopoli's Shearwater
Scopoli's shearwater (''Calonectris diomedea'') is a seabird in the petrel family Procellariidae. It breeds on rocky islands and on steep coasts in the Mediterranean but outside the breeding season it forages in the Atlantic. It is brownish grey above with darker wings and mostly white below. The bill is pale yellow with a dark patch near the tip. The sexes are alike. It was formerly considered to be conspecific with Cory's shearwater. Taxonomy Scopoli's shearwater was formally described in 1769 by the Austrian naturalist Giovanni Antonio Scopoli. He placed it with the other petrels in the genus '' Procellaria'' and coined the binomial name ''Procellaria diomedea''. Scopoli did not mention a type locality but this was designated in 1946 by the British Ornithologists' Union as the Tremiti Islands in the Adriatic. Scopoli's shearwater is now placed in the genus '' Calonectris'' that was introduced in 1915 by the ornithologists Gregory Mathews and Tom Iredale. The genus name c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Streaked Shearwater
The streaked shearwater (''Calonectris leucomelas'') is a species of seabird. The adult bird averages in length, with a wingspan. Description The streaked shearwater feeds mainly on fish and squid. It follows fishing boats, attracted to anchovy crawls off Japan and has been known to be taken as by-catch in nets or drowned when ingesting the bait on long-line fishing lines. The streaked shearwater nests in burrows. It prefers forested hills. This bird is abundant and widespread; however, some mortality occurs through becoming entangled in fishing nets, and from some predation by cats and rats. In addition, it is harvested by some traditional endemic human cultures. Distribution This species is pelagic, but is also found in inshore waters. It occurs in the Pacific Ocean, nesting in Japan and the Korean Peninsula, predominantly on their offshore islands. After breeding, the streaked shearwater migrate south, feeding in the seas off northern New Guinea, the Arafura Sea, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shearwater
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 colonies on the Falkland Islands (52°S 60°W) to as far as 70° north latitude in the North Atlantic Ocean off northern Norway, and around New Zealand to as far as 60° north latitude i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Verde Shearwater
The Cape Verde shearwater (''Calonectris edwardsii''), or cagarra locally, is a medium-large shearwater, a seabird in the petrel family Procellariidae. It is endemic to the Cape Verde archipelago of Macaronesia in the Atlantic Ocean, off the coast of West Africa. Taxonomy The Cape Verde shearwater was originally described in 1883 by Émile Oustalet as a full species. It was later lumped as a subspecies of Cory's shearwater but has since been separated again, by Cornelis Hazevoet in 1995, as a distinct species. Description The Cape Verde shearwater has a slim, dark bill, with head and upperparts darker than Cory's. The flight is more typically shearwater-like than Cory's, with stiffer and more rapid wing beats. The overall appearance, compared with Cory's, is of a smaller, slimmer and more angular bird. Distribution The shearwaters breed only within the Cape Verde Islands. The largest colonies are on the islands of Brava, Branco and Raso, though the species also breeds i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Puffinus
''Puffinus'' is a genus of seabirds in the order Procellariiformes that contains about 20 small to medium-sized shearwaters. Two other shearwater genera are named: '' Calonectris'', which comprises three or four large shearwaters, and '' Ardenna'' with another seven species (formerly often included within ''Puffinus''). The taxonomy of this group is the cause of much debate, and the number of recognised species varies with the source. The species in this group are long-winged birds, dark brown or black above, and white to dark brown below. They are pelagic outside the breeding season. They are most common in temperate and cold waters. These tubenose birds fly with stiff wings, and use a shearing flight technique to move across wave fronts with the minimum of active flight. Some small species, such as the Manx shearwater, are cruciform in flight, with their long wings held directly out from their bodies. Many are long-distance migrants, perhaps most spectacularly the sooty an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Procellariiformes
Procellariiformes is an order (biology), order of seabirds that comprises four family (biology), families: the albatrosses, the Procellariidae, petrels and shearwaters, and two families of storm petrels. Formerly called Tubinares and still called tubenoses in English, procellariiforms are often referred to collectively as the petrels, a term that has been applied to all members of the order,Warham, J. (1996). ''The Behaviour, Population, Biology and Physiology of the Petrels''. London: Academic Press, or more commonly all the families except the albatrosses.Brooke, 2004. They are almost exclusively pelagic (feeding in the open ocean), and have a cosmopolitan distribution across the world's oceans, with the highest species diversity, diversity being around New Zealand. Procellariiforms are seabird colony, colonial, mostly nesting on remote, predator-free islands. The larger species nest on the surface, while most smaller species nest in natural cavities and burrows. They exhibit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ardenna
''Ardenna'' is a genus of seabirds in the family Procellariidae. These medium-sized to large shearwater species were formerly included in the genus ''Puffinus''. Taxonomy A phylogenetic analysis using mitochondrial DNA published in 2004 found that ''Puffinus'' contained two distinct clades and was polyphyletic, with ''Puffinus'' more closely related to ''Calonectris'' than to ''Ardenna''. To create monophyletic genera a group of species were moved into ''Ardenna'', a genus that had been introduced in 1853 by Ludwig Reichenbach with the great shearwater as the type species. Reichenbach cites the Italian naturalist Ulisse Aldrovandi who in 1603 used the spelling "Artenna" for a seabird. Recent genomic studies have validated the phylogenetic distinction between ''Ardenna'' and ''Puffinus'', though this study finding ''Ardenna'' rather than ''Puffinus'' being closer to ''Calonectris''. Species Extant The genus contains seven extant species as shown below: Extinct The genus contains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seabird
Seabirds (also known as marine birds) are birds that are adaptation, adapted to life within the marine ecosystem, marine environment. While seabirds vary greatly in lifestyle, behaviour and physiology, they often exhibit striking convergent evolution, as the same environmental problems and feeding ecological niche, niches have resulted in similar adaptations. The first seabirds evolved in the Cretaceous geological period, period, while modern seabird families emerged in the Paleogene. Seabirds generally live longer, Reproduction, breed later and have fewer young than other birds, but they invest a great deal of time in their young. Most species nest in Bird colony, colonies, varying in size from a few dozen birds to millions. Many species are famous for undertaking long annual bird migration, migrations, crossing the equator or circumnavigating the Earth in some cases. They feed both at the ocean's surface and below it, and even on each other. Seabirds can be highly pelagic, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is bounded by the continents of Asia and Australia in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), the Pacific Ocean is the largest division of the World Ocean and the hydrosphere and covers approximately 46% of Earth's water surface and about 32% of the planet's total surface area, larger than its entire land area ().Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or approximately 20% of the water area of Earth#Surface, Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia (continent), Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. The Indian Ocean has large marginal or regional seas, including the Andaman Sea, the Arabian Sea, the Bay of Bengal, and the Laccadive Sea. Geologically, the Indian Ocean is the youngest of the oceans, and it has distinct features such as narrow continental shelf, continental shelves. Its average depth is 3,741 m. It is the warmest ocean, with a significant impact on global climate due to its interaction with the atmosphere. Its waters are affected by the Indian Ocean Walker circulation, resulting in unique oceanic currents and upwelling patterns. The Indian Ocean is ecologically diverse, with important ecosystems such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
