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Bracken Cave
Bracken Cave is the summer home to the largest colony of bats in the world. An estimated 20 million Mexican free-tailed bats roost in the cave from March to October making it the largest known concentration of mammals. The cave is located in southern Comal County, Texas, outside the city of San Antonio. The -wide crescent shaped opening to the cave lies at the bottom of a sinkhole, formed when the roof of the cave collapsed. The cave and undeveloped around it are owned by Austin, Texas-based Bat Conservation International, which restores the land to support native vegetation and an abundant variety of wildlife. Bat Conservation International bought the initial from the Marbach family in 1992, and has been assisted in preservation efforts by The Nature Conservancy. Access to the cave is restricted to protect the habitat of the resident bats. Bat Conservation International offers evening guided tours to the cave to watch the bats emerge from the cave. In media Bracken Cave has be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bracken Bat Cave Evening Of 17 June 2017
Bracken (''Pteridium'') is a genus of large, coarse ferns in the family Dennstaedtiaceae. Ferns (Pteridophyta) are vascular plants that have alternating generations, large plants that produce spores and small plants that produce sex cells (eggs and sperm). Brackens are noted for their large, highly divided leaves. They are found on all continents except Antarctica and in all environments except deserts, though their typical habitat is moorland. The genus probably has the widest distribution of any fern in the world. The word ''bracken'' is of Old Norse origin, related to Swedish ''bräken'' and Danish ''bregne'', both meaning fern. In the past, the genus was commonly treated as having only one species, ''Pteridium aquilinum'', but the recent trend is to subdivide it into about ten species. Like other ferns, brackens do not have seeds or fruits, but the immature fronds, known as ''fiddleheads'', are sometimes eaten, although some are thought to be carcinogenic. Description and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadarida Brasiliensis
The Mexican free-tailed bat or Brazilian free-tailed bat (''Tadarida brasiliensis'') is a medium-sized bat native to the Americas, so named because its tail can be almost half its total length and is not attached to its uropatagium. It has been claimed to have the fastest horizontal speed of any animal, reaching top ground speeds over . It also flies the highest among bats, at altitudes around . It is regarded as one of the most abundant mammals in North America. Its proclivity towards roosting in huge numbers at relatively few locations makes it vulnerable to habitat destruction in spite of its abundance. For instance, up to 1.5 million bats reside under just one bridge in Austin. The Texas Legislature designated the Mexican free-tailed bat the state mammal (flying) in 1995. The bat is considered a species of special concern in California as a result of declining populations. Taxonomy The Mexican free-tailed bat was described as a new species in 1824 by French zoologist Isi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadarida
The genus ''Tadarida'' has 9 or more species of free-tailed bats divided into two subgenera, with the first of these containing seven species spread across the Old World (including southern Europe and North Africa, large parts of southern Asia, and India right across to Japan). Four species occur exclusively in Africa including Madagascar while two more species occur in central Papua New Guinea, and western and southern Australia, respectively. The relatively well-known species '' T. teniotis'', which occurs in southern Europe and North Africa, the Middle East, and across southern Asia to Japan, is known to fly often during the late afternoon, where it hawks for insects alongside swifts (Apodidae), swallows, and martins (Hirundinidae). The other subgenus contains the widespread New World single species '' T. brasiliensis'' (subgenus ''Rhizomops''), which ranges from the southern United States and the West Indies to Chile and Argentina. This species is noted for its massive mater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protected Areas Of Comal County, Texas
Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring: Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage servin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature Reserves In Texas
Nature, in the broadest sense, is the physics, physical world or universe. "Nature" can refer to the phenomenon, phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena. The word ''nature'' is borrowed from the Old French ''nature'' and is derived from the Latin word ''natura'', or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, ''natura'' is mostly used as the Latin translation of the Greek word ''physis'' (φύσις), which originally related to the intrinsic characteristics of plants, animals, and other features of the world to develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wild Caves
Wild, wild, wilds or wild may refer to: Common meanings * Wildlife, Wild animal * Wilderness, a wild natural environment * Wildness, the quality of being wild or untamed Art, media and entertainment Film and television * Wild (2014 film), ''Wild'' (2014 film), a 2014 American film from the 2012 book * Wild (2016 film), ''Wild'' (2016 film), a 2016 German film * ''The Wild'', a 2006 Disney 3D animation film * Wild (TV series), ''Wild'' (TV series), a 2006 American documentary television series * The Wilds (TV series), a 2020 fictional television series Literature * ''Wild: From Lost to Found on the Pacific Crest Trail'' a 2012 non-fiction book by Cheryl Strayed * ''Wild, An elemental Journey'', a 2006 autobiographical book by Jay Griffiths * The Wild (novel), ''The Wild'' (novel), a 1991 novel by Whitley Strieber * ''The Wild'', a science fiction novel by David Zindell * ''The Wilds'', a 1998 limited-edition horror novel by Richard Laymon Music * Wild (band), ''Wild'' (band), a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone Caves
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limestone co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caves Of Texas
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as ''speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ann W
Anne, alternatively spelled Ann, is a form of the Latin female given name Anna. This in turn is a representation of the Hebrew Hannah, which means 'favour' or 'grace'. Related names include Annie. Anne is sometimes used as a male name in the Netherlands, particularly in the Frisian speaking part (for example, author Anne de Vries). In this incarnation, it is related to Germanic arn-names and means 'eagle'.See entry on "Anne" in th''Behind the Name'' databaseand th"Anne"an"Ane"entries (in Dutch) in the Nederlandse Voornamenbank (Dutch First Names Database) of the Meertens Instituut (23 October 2018). It has also been used for males in France (Anne de Montmorency) and Scotland (Lord Anne Hamilton). Anne is a common name and the following lists represent a small selection. For a comprehensive list, see instead: . As a feminine name Anne * Saint Anne, Mother of the Virgin Mary * Anne, Queen of Great Britain (1665–1714), Queen of England, Scotland, and Ireland (1702–07) and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dirty Jobs
''Dirty Jobs'' is an American television series that originally aired on the Discovery Channel in which host Mike Rowe is shown performing difficult, strange, disgusting, or messy occupational duties alongside the job's current employees. The show, produced by Pilgrim Films & Television, premiered with three pilot episodes in November 2003. It returned as a series on July 26, 2005, running for eight seasons until September 12, 2012. The show's setting was refocused in Australia for the final season, called ''Dirty Jobs Down Under''. A spinoff miniseries titled ''Dirty Jobs: Rowe'd Trip'' premiered on July 7, 2020. The original series returned on January 2, 2022. There is also a European edition of the show hosted by former Manchester United and Denmark goalkeeper Peter Schmeichel. The series was nominated for five Primetime Emmys: 3 for Outstanding Reality Program, which Rowe was nominated for as a producer, and two for Cinematography. Format In each episode, a worker or tea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Free-tailed Bat
The Mexican free-tailed bat or Brazilian free-tailed bat (''Tadarida brasiliensis'') is a medium-sized bat native to the Americas, so named because its tail can be almost half its total length and is not attached to its uropatagium. It has been claimed to have the fastest horizontal speed of any animal, reaching top ground speeds over . It also flies the highest among bats, at altitudes around . It is regarded as one of the most abundant mammals in North America. Its proclivity towards roosting in huge numbers at relatively few locations makes it vulnerable to habitat destruction in spite of its abundance. For instance, up to 1.5 million bats reside under just one bridge in Austin. The Texas Legislature designated the Mexican free-tailed bat the state mammal (flying) in 1995. The bat is considered a species of special concern in California as a result of declining populations. Taxonomy The Mexican free-tailed bat was described as a new species in 1824 by French zoologist Isi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Geographic Wild
National Geographic Wild (shortened as Nat Geo Wild and abbreviated NGW) is a global pay television network owned by National Geographic Partners, a joint venture between The Walt Disney Company (73%) and the National Geographic Society (27%). The channel primarily focuses on wildlife and natural history non-fiction programming. It is a sister network to National Geographic TV. The channel first launched in Hong Kong on 1 January 2006. It later launched in the United Kingdom, Turkey, Ireland, Romania, India, Vietnam, and Poland replacing the now defunct Adventure One. The channel remains the world's first bilingual wildlife service, available in English and Cantonese in the Hong Kong market as well as Tagalog in The Philippines. It launched in Latin America on 1 November 2009 as a high definition channel. In 2010, it launched in the United States. As of February 2015, approximately 57,891,000 American households (49.7% of households with television) receive Nat Geo Wild. P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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