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Aechmophorus
''Aechmophorus''Etymology: ''Aechmophorus'', "spear-bearer", from Ancient Greek ''aichme'' (a spear) + ''phoros'' (one who bears something around), in reference to its bill. is a genus of bird 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 lightweigh ...s in the grebe family. Species It has two living representatives breeding in western North America. One prehistoric species has been described from fossil remains: *''Aechmophorus elasson'' (Late Pliocene of W USA) Although the two living species look very similar, beak, bill shape and coloration, as well as feathering around the scarlet eye of the bird can be used to determine the precise species. Distinguishing features The western grebe has a straight bill with a dull green-yellow color as opposed to the Clark's grebe, which has a sligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Grebe
The western grebe (''Aechmophorus occidentalis'') is a species in the grebe family of water birds. Folk names include "dabchick", "swan grebe" and "swan-necked grebe". Western grebe fossils from the Late Pleistocene of southwest North America were described as a distinct species, but later ranked as a paleosubspecies ''Aechmophorus occidentalis lucasi''. More recent study found them to fall within the variation now known to exist in today's birds. Description The western grebe is the largest North American grebe. It is long, weighs and measures across the wings.''CRC Handbook of Avian Body Masses'' by John B. Dunning Jr. (Editor). CRC Press (1992), .Burnie D and Wilson DE (Eds.), ''Animal: The Definitive Visual Guide to the World's Wildlife''. DK Adult (2005), It is black-and-white, with a long, slender, swan-like neck and red eyes. It is easily confused with Clark's grebe, which shares similar features, body size, behavior and habitat, and Hybrid (biology), hybrids are known ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clark's Grebe
Clark's grebe (''Aechmophorus clarkii'') is a North American waterbird species in the grebe family. Until the 1980s, it was thought to be a pale Polymorphism (biology), morph of the western grebe, which it resembles in size, range, and behavior. Intermediates between the two species are known. This species nests on large inland lakes in western North America and bird migration, migrates to the Pacific coast over the winter. It maintains local populations year-round in California, Nevada, and Arizona (the Lower Colorado River Valley), as well as in central Mexico. It feeds by diving for insects, polychaete worms, crustaceans, and salamanders. It performs the same elaborate courtship display as the western grebe. Etymology and common names The "Clark" of its common name—and its specific epithet ''clarkii''—honors John Henry Clark, a 19th-century American surveyor who was also a naturalist and collector. The genus name ''Aechmophorus'' comes from the Ancient Greek words αἰ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grebe
Grebes () are aquatic diving birds in the order Podicipediformes . Grebes are widely distributed freshwater birds, with some species also found in marine habitats during migration and winter. Some flightless species exist as well, most notably in stable lakes. The order contains a single family, the Podicipedidae, which includes 22 species in six extant genera. Although, superficially, they resemble other diving birds such as loons and coots, they are most closely related to flamingos, as supported by morphological, molecular and paleontological data. Many species are monogamous and are known for their courtship displays, with the pair performing synchronized dances across the water's surface. The birds build floating vegetative nests where they lay several eggs. About a third of the world's grebes are listed at various levels of conservation concerns—the biggest threats including habitat loss, the introduction of invasive predatory fish and human poaching. As such, three spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aechmophorus
''Aechmophorus''Etymology: ''Aechmophorus'', "spear-bearer", from Ancient Greek ''aichme'' (a spear) + ''phoros'' (one who bears something around), in reference to its bill. is a genus of bird 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 lightweigh ...s in the grebe family. Species It has two living representatives breeding in western North America. One prehistoric species has been described from fossil remains: *''Aechmophorus elasson'' (Late Pliocene of W USA) Although the two living species look very similar, beak, bill shape and coloration, as well as feathering around the scarlet eye of the bird can be used to determine the precise species. Distinguishing features The western grebe has a straight bill with a dull green-yellow color as opposed to the Clark's grebe, which has a sligh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birds Of North America
The lists of birds in the light blue box below are divided by biological family. The lists are based on ''The AOS Check-list of North American Birds'' of the American Ornithological Society and ''The Clements Checklist of Birds of the World'' supplemented with checklists from Panama, Greenland, and Bermuda . It includes the birds of Greenland, Canada, the United States (excluding Hawaii), Mexico, Central America, Bermuda, and the West Indies. Taxonomy The taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) used in the accompanying bird lists adheres to the conventions of the AOS's (2019) ''Check-list of North American Birds'', the recognized scientific authority on the taxonomy and nomenclature of North America birds. The AOS's Committee on Classification and Nomenclature, the body responsible for maintaining and updating the ''Check-list'', "strongly and unanimously continues to endorse the biological sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Coast
Pacific coast may be used to reference any coastline that borders the Pacific Ocean. Geography Americas Countries on the western side of the Americas have a Pacific coast as their western or southwestern border, except for Panama, where the Pacific coast is primarily on its southern border. The first Europeans to see the Pacific Ocean were able to do so by crossing the narrow Panama isthmus. The unique position of Panama in relation to the Pacific Ocean resulted in the ocean initially being named the South Sea. * West Coast of Canada * Geography of Chile * Geography of Colombia * Geography of Costa Rica * Geography of Ecuador * Geography of El Salvador * Geography of Guatemala * Geography of Honduras * Pacific Coast of Mexico * Geography of Nicaragua * Geography of Panama * Geography of Peru * West Coast of the United States Asia Countries on the eastern and southeastern sides of Asia have a Pacific coast as part (or all) of their border. * * Geography of Japan * Geography of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bird Genera
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] |
Auk (journal)
''Ornithology'', formerly ''The Auk'' and ''The Auk: Ornithological Advances'', is a peer-reviewed scientific journal and the official publication of the American Ornithological Society (AOS). It was established in 1884 and is published quarterly. The journal covers the anatomy, behavior, and distribution of birds. It was named for the great auk, the symbol of the AOS. In 2018, the American Ornithology Society announced a partnership with Oxford University Press to publish ''The Auk: Ornithological Advances'' and '' The Condor: Ornithological Applications'' ''.'' In January 2021, the journal was renamed ''Ornithology'', with the stated goal of improving descriptiveness, thematic focus, and ease of citation of the journal title. The society's sister publication '' The Condor'' was renamed ''Ornithological Applications'' at the same time. Editors The following have been editors-in-chief of the journal: See also * List of ornithology journals References External links ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Condor (journal)
''Ornithological Applications'', formerly ''The Condor'' and ''The Condor: Ornithological Applications'', is a peer-reviewed quarterly scientific journal covering ornithology. It is an official journal of the American Ornithological Society. History The journal was first published in 1899 as the ''Bulletin of the Cooper Ornithological Club'' by a group of biologists in California. The journal's scope was regional, covering the western United States. In 1900, the name was changed to ''The Condor''. In 1947, the journal's subtitle was shortened to ''The Condor, Journal of the Cooper Ornithological Club''. Editors-in-Chief: 1899-1902: Chester Barlow; 1902-1905: Walter K. Fisher with Joseph Grinnell as Associate Editor; 1906-1939 Joseph Grinnell; 1940-1966: Alden H. Miller Berkeley, CA; 1966-1968: James R. King Washington State; 1969-1973: Ralph J. Raitt New Mexico State University; 1973-1974: Francis S. L. Williamson SI Chesapeake Bay Center for Environmental Studies, Edgewat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Begging Behavior In Animals
Begging in animals is when an animal solicits being given resources by another animal. This is usually a young animal soliciting food from their parents, brood hosts or other adults. However, the resource is sometimes non-food related or may be solicited by adult animals. Begging behavior is most widely studied in birds, however, mammals, amphibians, and invertebrates perform begging displays. Generally in food solicitation, begging behavior is instinctive, although in some instances it is learned (e.g. pet cats and dogs). While the ultimate causation for begging is an increase in the animal's individual fitness, several theories have been proposed for how food begging evolved proximate causes including scramble competition, honest signalling of need, and cooperative begging by siblings. Various types of information such as nutritional status or immunocompetence can be transmitted with auditory and visual begging signals and the behavior can be modulated by several factors such ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marsh
A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found at the edges of lakes and streams, where they form a transition between the aquatic and terrestrial ecosystems. They are often dominated by grasses, rushes or reeds. If woody plants are present they tend to be low-growing shrubs, and the marsh is sometimes called a carr. This form of vegetation is what differentiates marshes from other types of wetland such as swamps, which are dominated by trees, and mires, which are wetlands that have accumulated deposits of acidic peat. Marshes provide habitats for many kinds of invertebrates, fish, amphibians, waterfowl and aquatic mammals. This biological productivity means that marshes contain 0.1% of global sequestered terrestrial carbon. Moreover, they have an outsized influence on climate resi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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