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Eastern Meadowlark
The eastern meadowlark (''Sturnella magna'') is a medium-sized blackbird (family: Icteridae), very similar in appearance to sister species western meadowlark. It occurs from eastern North America to northern South America, where it is also most widespread in the east. The Chihuahuan meadowlark was formerly considered to be conspecific with the eastern meadowlark. Taxonomy The eastern meadowlark was formally described by the Swedish naturalist Carl Linnaeus in 1758 in the tenth edition of his ''Systema Naturae''. He placed it with the larks and pipits in the genus ''Alauda'' and adopted the binomial name ''Alauda magna''. Linnaeus based his description on the "large lark" that had been described and illustrated in 1729–1732 by the English naturalist Mark Catesby. Catesby also used the Latin ''Alauda magna'' but as his book predates the introduction of the binomial system, he is not acknowledged as the authority. Catesby reported that "they inhabit Carolina, Virginia and most of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers ,Mexico ''''. . making it the world's 13th-largest country by are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Witmer Stone
Witmer Stone (September 22, 1866 – May 24, 1939) was an American ornithologist, botanist, and mammalogist, and was considered one of the last of the “great naturalists.” Stone is remembered principally as an ornithologist. He was president of the American Ornithologists’ Union (AOU) 1920–23, and was editor of the AOU's periodical '' The Auk'' 1912–1936. He spearheaded the production of the 4th edition of the AOU checklist, published in 1931. He worked for over 50 years in the Ornithology Department at the Academy of Natural Sciences of Philadelphia, eventually serving as Director of the institution. Stone was one of the founding members of the Delaware Valley Ornithological Club (DVOC) in 1890 and was actively involved in the organization for the remainder of his life. Stone was one of only two scientists (Joseph Grinnell was the other) to serve as president of both the AOU and the American Society of Mammalogists, and he co-authored two popular books about ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarsus (skeleton)
In the human body, the tarsus is a cluster of seven articulating bones in each foot situated between the lower end of the tibia and the fibula of the lower leg and the metatarsus. It is made up of the midfoot (cuboid, medial, intermediate, and lateral cuneiform, and navicular) and hindfoot ( talus and calcaneus). The tarsus articulates with the bones of the metatarsus, which in turn articulate with the proximal phalanges of the toes. The joint between the tibia and fibula above and the tarsus below is referred to as the ankle joint proper. In humans the largest bone in the tarsus is the calcaneus, which is the weight-bearing bone within the heel of the foot. Human anatomy Bones The talus bone or ankle bone is connected superiorly to the two bones of the lower leg, the tibia and fibula, to form the ankle joint or talocrural joint; inferiorly, at the subtalar joint, to the calcaneus or heel bone. Together, the talus and calcaneus form the hindfoot.Podiatry Channel, '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Culmen (bird)
The beak, bill, or rostrum is an external anatomical structure found mostly in birds, but also in turtles, non-avian dinosaurs and a few mammals. A beak is used for eating, preening, manipulating objects, killing prey, fighting, probing for food, courtship, and feeding young. The terms ''beak'' and '' rostrum'' are also used to refer to a similar mouth part in some ornithischians, pterosaurs, cetaceans, dicynodonts, anuran tadpoles, monotremes (i.e. echidnas and platypuses, which have a beak-like structure), sirens, pufferfish, billfishes and cephalopods. Although beaks vary significantly in size, shape, color and texture, they share a similar underlying structure. Two bony projections – the upper and lower mandibles – are covered with a thin keratinized layer of epidermis known as the rhamphotheca. In most species, two holes called ''nares'' lead to the respiratory system. Etymology Although the word "beak" was, in the past, generally restricted to the sharpened bills of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Georg Wagler
Johann Georg Wagler (28 March 1800 – 23 August 1832) was a German herpetologist and ornithologist. Wagler was assistant to Johann Baptist von Spix, and gave lectures in zoology at the Ludwig Maximilian University of Munich after it was moved to Munich. He worked on the extensive collections brought back from Brazil by Spix, and published partly together with him books on reptiles from Brazil. Wagler wrote ''Monographia Psittacorum'' (1832), which included the correct naming of the blue macaws. In 1832, Wagler died of an accidental self-inflicted gunshot wound while out collecting in München-Moosach. Life Johann Georg Wagler was a German naturalist and scientist in the 19th century, whose works primarily focused on herpetology and ornithology (Beolens, Watkins & Grayson, 2011). Johan Georg Wagler was born on the 28th of March 1800, in the city of Nuremberg, where the Chancellor of the City Court was Wagler's father (Wagler, 1884). After taking up gymnastics at Nuremberg, J ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llanos
The Llanos ( Spanish ''Los Llanos'', "The Plains"; ) is a vast tropical grassland plain situated to the east of the Andes in Colombia and Venezuela, in northwestern South America. It is an ecoregion of the tropical and subtropical grasslands, savannas, and shrublands biome. Geography The Llanos occupy a lowland that extends mostly east and west. The Llanos are bounded on the west and northwest by the Andes, and on the north by the Venezuelan Coastal Range. The Guiana Highlands are to the southeast, and the Negro-Branco moist forests are to the southwest. To the east the Orinoco wetlands and Orinoco Delta swamp forests occupy the Orinoco Delta. The Llanos' main river is the Orinoco, which runs from west to east through the ecoregion and forms part of the border between Colombia and Venezuela. The Orinoco is the major river system of Venezuela. Climate The ecoregion has a tropical savanna climate that grades into a tropical monsoon climate in the Colombian Llanos. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Chubb (ornithologist)
Charles Chubb (31 December 1851 – 25 June 1924) was a British ornithologist. Family Chubb was born in Steeple Langford near Salisbury, England. He married twice, to Ada Albion and Alice Mabel Baker. He had seven children, among them Ernest Charles Chubb who also became an ornithologist and was a museum curator in Durban. In 1924, Chubb was knocked down by a car outside the Natural History Museum, London, and died two weeks later in that city. Career Chubb began working at the British Museum at the age of 26. Among the birds he described are Cobb's wren and the tinamou genus ''Crypturellus ''Crypturellus'' is a genus of tinamous containing mostly forest species. However, there are the odd few that are grassland or steppe tinamous. The genus contains 21 species. Taxonomy The genus ''Crypturellus'' was introduced in 1914 by the Brit ...''. Works * The Birds of British Guiana, based on the collection of Frederick Vavasour McConnell' (2 volumes, 1916 and 1921) * The Bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludlow Griscom
Ludlow Griscom (June 17, 1890 – May 28, 1959) was an American ornithologist known as a pioneer in field ornithology. His emphasis on the identification of free-flying birds by field marks became widely adopted by professionals and amateurs. Many called him "Dean of the Birdwatchers." Early life and family Griscom was born in New York City, the son of Clement Acton Griscom Jr. and Genevieve Sprigg Ludlow. Ludlow's grandfather Clement Acton Griscom Sr. was a prominent merchant and shipping executive. His maternal grandfather, William Ludlow, distinguished himself through military service. Griscom's family traces its ancestry back to Thomas Lloyd, a 17th-century physician in Pennsylvania. The oldest of three children, Ludlow Griscom had a sister, Joyce, who died in childhood, and a brother, Acton. As a boy, Ludlow's interest in birds showed itself as early as 1898. In 1907, he found fellow nature enthusiasts when he joined the Linnaean Society of New York. Griscom rece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Ridgway
Robert Ridgway (July 2, 1850 – March 25, 1929) was an American ornithologist specializing in systematics. He was appointed in 1880 by Spencer Fullerton Baird, secretary of the Smithsonian Institution, to be the first full-time curator of birds at the United States National Museum, a title he held until his death. In 1883, he helped found the American Ornithologists' Union, where he served as officer and journal editor. Ridgway was an outstanding descriptive taxonomist, capping his life work with ''The Birds of North and Middle America'' (eight volumes, 1901–1919). In his lifetime, he was unmatched in the number of North American bird species that he described for science. As technical illustrator, Ridgway used his own paintings and outline drawings to complement his writing. He also published two books that systematized color names for describing birds, ''A Nomenclature of Colors for Naturalists'' (1886) and ''Color Standards and Color Nomenclature'' (1912). Orni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yucatán
Yucatán (, also , , ; yua, Yúukatan ), officially the Free and Sovereign State of Yucatán,; yua, link=no, Xóot' Noj Lu'umil Yúukatan. is one of the 31 states which comprise the federal entities of Mexico. It comprises 106 separate municipalities, and its capital city is Mérida. It is located on the northern part of the Yucatán Peninsula. It is bordered by the states of Campeche to the southwest and Quintana Roo to the southeast, with the Gulf of Mexico off its northern coast. Before the arrival of Spaniards in the Yucatán Peninsula, the name of this region was ''Mayab''. In the Yucatec Maya language, ''mayab'' means "flat", and is the source of the word "Maya" itself. The peninsula was a very important region for the Maya civilization, which reached the peak of its development here, where the Mayans founded the cities of Chichen Itza, Izamal, Motul, Mayapan, Ek' Balam and Ichcaanzihóo (also called Ti'ho), now Mérida. After the Spanish conquest of Yucatán ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Josselyn Van Tyne
Josselyn Van Tyne (11 May 1902, Philadelphia – 30 January 1957, Ann Arbor) was an American ornithologist and museum curator of birds. A son of the historian Claude H. Van Tyne, Josselyn Van Tyne received his A.B. from Harvard University in 1925 and his Ph.D. in 1928 from the University of Michigan at Ann Arbor. He became Assistant Curator of Birds at the U. of Michigan's Museum of Zoology and in 1931 Curator of Birds, a position he held until his death; his successor as the Museum's Curator of Birds was Harrison B. Tordoff. In 1930 Van Tyne became an instructor in the U. of Michigan's Department of Zoology, then assistant professor, associate professor, and finally professor in 1953. Van Tyne was editor of the ''Wilson Bulletin'' from 1939 to 1948 and the president of the Wilson Ornithological Society from 1935 to 1937. In 1936 he was elected a Fellow of the American Ornithologists' Union and served as the Union's President from 1950 to 1953. In 1933 he married Helen Belfi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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