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Aleutian Cackling Goose
The Aleutian cackling goose (''Branta hutchinsii leucopareia'') is a small subspecies of the cackling goose averaging in weight. It was one of 122 species of animals, birds, and fishes first documented for science by the Lewis and Clark Expedition (Corps of Discovery). Taxonomy The Aleutian cackling goose was formerly thought to be a subspecies of the Canada goose, as ''Branta canadensis leucopareia''. The Bering cackling goose, a related population/subspecies, lived on the Komandorski and Kuril Islands. This population was not markedly distinct from the Aleutian one, and it is debated as to whether its subspecies ''B. h. asiatica'' is valid. By about 1920 or so (last seen either in 1914 or 1929), the Bering population became extinct as a result of predation by humans and introduced Arctic foxes. Description The Aleutian cackling goose has the typical black head and neck, white cheek patches, grayish-brown back and wings, white rump, black tail feathers, legs, and feet of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated as subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific name, infraspecific ranks, such as variety (botany), variety, may be named. In bacteriology and virology, under standard International Code of Nomenclature of Prokaryotes, bacterial nomenclature and virus clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cackling Goose
The cackling goose (''Branta hutchinsii'') is a species of goose found in North America and East Asia. Systematics The genus name ''Branta'' is a Latinised form of Old Norse ''Brandgás'', "burnt (black) goose", and the specific epithet ''hutchinsii'' commemorates English surgeon Thomas Hutchins (naturalist), Thomas Hutchins who was employed by the Hudson's Bay Company. The cackling goose was originally considered the same species or a subspecies of the Canada goose, but in July 2004 the American Ornithologists' Union's (AOU) Committee on Classification and Nomenclature split the two into two species, making cackling goose into a full species with the scientific name ''Branta hutchinsii''. The British Ornithologists' Union (BOU) followed suit in June 2005. The AOU has divided the many associated subspecies between both animals. To the present species were assigned: *Richardson's cackling goose (''B. h. hutchinsii'') *Aleutian cackling goose (''B. h. leucopareia'') *Small cackli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada Goose
The Canada goose (''Branta canadensis''), sometimes called Canadian goose, is a large species of goose with a black head and neck, white cheeks, white under its chin, and a brown body. It is native to the arctic and temperate regions of North America, and it is occasionally found during bird migration, migration across the Atlantic in northern Europe. It has been introduced to France, the United Kingdom, Ireland, Scandinavia, New Zealand, Japan, Chile, Argentina, and the Falkland Islands. Like most geese, the Canada goose is primarily herbivorous and normally migratory; often found on or close to fresh water, the Canada goose is also common in Brackish water, brackish marshes, estuaries, and lagoons. Extremely adept at urban wildlife, living in human-altered areas, Canada geese have established breeding colonies in urban and cultivated habitats, which provide food and few natural predators. The success of this common park species has led to it often being considered a pest (orga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commander Islands
The Commander Islands, Komandorski Islands, or Komandorskie Islands (, ''Komandorskiye ostrova'') are a series of islands in the Russian Far East, a part of the Aleutian Islands, located about east of the Kamchatka Peninsula in the Bering Sea. Treeless and sparsely populated, the islands consist of Bering Island, ; Medny Island, ; and fifteen islets and rocks. The largest of the latter are Tufted Puffin Rock ''(Kamen Toporkov'' or ''Ostrov Toporkov)'', , and Kamen Ariy, which are between west of the only settlement, Nikolskoye. Administratively, the Commanders compose the Aleutsky District of the Kamchatka Krai in Russia. In 2005, the Comandorsky State Nature Reserve was nominated for the List of World Heritage Sites in Russia of UNESCO. Geography The Commander Islands archipelago consists of 15 islands and is a part of a submarine volcanic ridge extending from Alaska to Kamchatka dated by the beginning of Paleogene (60-70 million years ago). The islands are the w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuril Islands
The Kuril Islands or Kurile Islands are a volcanic archipelago administered as part of Sakhalin Oblast in the Russian Far East. The islands stretch approximately northeast from Hokkaido in Japan to Kamchatka Peninsula in Russia, separating the Sea of Okhotsk from the north Pacific Ocean. There are 56 islands and many minor islets. The Kuril Islands consist of the Greater Kuril Chain and, at the southwest end, the parallel Lesser Kuril Chain. The group termed the 'South Kurils' consists of those of the Lesser Kuril Chain together with Kunashir and Iturup in the Greater Kuril Chain. The Vries Strait between Iturup and Urup forms the Miyabe Line dividing the North and South Kurils. The Kuril Islands cover an area of around , with a population of roughly 20,000. The islands have been under Russian administration since their Invasion of the Kuril Islands, 1945 invasion by the Soviet Union near the end of World War II. Japan claims the four southernmost islands, including two of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinction
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and recover. As a species' potential Range (biology), range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxon, Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the Fossil, fossil record) after a period of apparent absence. Over five billion species are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryotes globally, possibly many times more if microorganisms are included. Notable extinct animal species include Dinosaur, non-avian dinosaurs, Machairodontinae, saber-toothed cats, and mammoths. Through evolution, species arise through the process of specia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Fox
The Arctic fox (''Vulpes lagopus''), also known as the white fox, polar fox, or snow fox, is a small species of fox native to the Arctic regions of the Northern Hemisphere and common throughout the Tundra#Arctic tundra, Arctic tundra biome. It is well adaptation, adapted to living in cold environments, and is best known for its thick, warm fur that is also used as camouflage. It has a large and very fluffy tail. In the wild, most individuals do not live past their first year but some exceptional ones survive up to 11 years. Its body length ranges from , with a generally rounded body shape to minimize the escape of body heat. The Arctic fox preys on many small creatures such as lemmings, voles, ringed seal pups, fish, waterfowl, and seabirds. It also eats carrion, berries, seaweed, and insects and other small invertebrates. Arctic foxes form Monogamy in animals, monogamous pairs during the breeding season and they stay together to raise their young in complex underground dens. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small Cackling Goose
The small cackling goose (''Branta hutchinsii minima''), also known as the Ridgway's goose, is the smallest subspecies of cackling goose and the smallest variant of white-cheeked goose. Description ''Ridgway’s geese'' are the smallest of the white cheeked geese and the second smallest goose in the genus Branta, following the red-breasted goose. It is only slightly larger than a mallard and has a culmen (bill) length of 32 mm. The small cackling goose’s calls are described as high pitched yelps. In flight, it can be identified by its fast wingbeat, in contrast to Canada geese and the larger subspecies of cackling geese. Distribution Small cackling geese are known to summer in western Alaska, and winter in the Willamette Valley. It has also been known to occur in California and southern Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the Unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buldir Island
Buldir Island (also sometimes written Buldyr; ; ) is a small island in the western Aleutian Islands of the U.S. state of Alaska. It is long and wide with an area of . Buldir is farther from the nearest land than any other Aleutian Island. Its nearest neighbors are Kiska in the Rat Island group, to the east, and Shemya in the Near Island group, to the west. Buldir Island is uninhabited. It is part of the Alaska Maritime National Wildlife Refuge. It has been designated a Research Natural Area. Geology Buldir is the most westerly of the Aleutian Islands, which formed as a result of volcanic activity in the late Quaternary or recent times. The rocks from which the island formed are of two different ages with a considerable time gap. The rocks of the older dome are mainly olivine basalts and the younger dome consists of hornblende basalts and basaltic andesites. That this island is younger than some of the neighboring islands is also suggested because fewer species of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Fish And Wildlife Service List Of Endangered Mammals And Birds
This is a list of the bird and mammal species and subspecies described as endangered by the United States Fish and Wildlife Service. It contains species and subspecies not only in the U.S. and its territories, but also those only found in other parts of the world. It does not include endangered fish, amphibians, reptiles, plants, or invertebrates. The complete list can be found in the U.S. Code of Federal Regulations Title 50 Part 17. The listings for status are E for endangered or T for threatened. Species or subspecies may also be endangered or threatened because they are sufficiently similar in appearance to endangered or threatened species or subspecies and are marked for "similarity of appearance" as E(S/A) or T(S/A). Threatened species are animals and plants that are likely to become endangered in the foreseeable future. Identifying, protecting, and restoring endangered and threatened species and subspecies are the primary objectives of the U.S. Fish and Wildlife Service ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Joaquin River National Wildlife Refuge
The San Joaquin River National Wildlife Refuge is a protected area of along the San Joaquin River in the northern San Joaquin Valley, California. It is within San Joaquin County and Stanislaus County. It protects more than of riparian woodlands, wetlands, and grasslands and hosts a diversity of native wildlife. Established in 1987 under the authority of the Endangered Species and Migratory Bird Conservation Acts, the refuge has also played a major role in the recovery of Aleutian cackling geese. Riparian forest Within the borders of the San Joaquin National Wildlife Refuge is one of California's largest riparian forest restoration projects. 400,000 native trees have been planted across of the river's floodplain. The major project was led by River Partners, Inc., a non-profit organization committed to restoring riparian zone habitat for wildlife. Riparian forests, which once covered large portions of California's Central Valley, have been greatly reduced due to state ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branta
The black geese of the genus ''Branta'' are waterfowl belonging to the Goose, true geese and swans subfamily Anserinae. They occur in the northern coastal regions of the Palearctic and all over North America, Bird migration, migrating to more southerly coasts in winter, and as resident birds in the Hawaiian Islands. Alone in the Southern Hemisphere, a self-sustaining Feral animal, feral population derived from introduced Canada geese is also found in New Zealand. The black geese derive their vernacular name for the prominent areas of black coloration found in all species. They can be distinguished from all other true geese by their legs and feet, which are black or very dark grey. Furthermore, they have black bills and large areas of black on the head and neck, with white (ochre in one species) markings that can be used to tell apart most species.The nēnē, which is aberrant in many respects, has no white on the head or neck and fairly little black, being quite similar to the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
