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    Bat And Winn

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    Bat And Winn

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    And — they had claws that were clinging to a grey, rocky surface. I was a bat! I could feel myself hanging upside down and then detaching from the cave roof and flying very fast out into the dark night sky.

    I went fast and far out into the air and then sensed that there were insects flying around me. I zeroed in on one of them, opened my small jaws and took in one that was like a fly.

    I bit down, chewed, and swallowed. It was crunchy. I continued to circle — flying fast — for a while and then our instructions must have been to bring our mind-experience to an end.

    I flew back to the cave and as I entered it, I was aware of a strong, pungent smell — the guano.

    As a human I found it unusual and unpleasant. I came to rest upside down again on the cave roof, surrounded by other bats, sensing that some of them were holding their babies.

    I have never visited a bat cave, gone sky diving, or eaten insects. Although I had the dual sense of being both the bat and the observer, it was clear that I was experiencing being in a bat body as part of a bat community and sensing, moving, feeling, tasting, touching, and smelling with bat physical abilities in bat surroundings.

    Where did this highly sensate, strange and clear experience come from? To build something you have to understand it precisely. Who knows, it might eventually explain the mystery of our own being.

    We have already developed artificial intelligence, but I do not believe that we can ever create a conscious machine.

    Sometimes it means being alert rather than comatose, or it can mean knowing that you know. Bats were formerly grouped in the superorder Archonta , along with the treeshrews Scandentia , colugos Dermoptera , and primates.

    Euarchontoglires primates, treeshrews, rodents, rabbits. Eulipotyphla hedgehogs, shrews, moles, solenodons. Chiroptera bats. Pholidota pangolins.

    Carnivora cats, hyenas, dogs, bears, seals. Perissodactyla horses, tapirs, rhinos. Cetartiodactyla camels, ruminants, whales. The phylogenetic relationships of the different groups of bats have been the subject of much debate.

    The traditional subdivision into Megachiroptera and Microchiroptera reflected the view that these groups of bats had evolved independently of each other for a long time, from a common ancestor already capable of flight.

    This hypothesis recognised differences between microbats and megabats and acknowledged that flight has evolved only once in mammals.

    Most molecular biological evidence supports the view that bats form a natural or monophyletic group. Pteropodidae megabats. Megadermatidae false vampire bats.

    Craseonycteridae Kitti's hog-nosed bat. Rhinopomatidae mouse-tailed bats. Hipposideridae Old World leaf-nosed bats.

    Rhinolophidae horseshoe bats. Miniopteridae long winged bat. Noctilionidae fisherman bats. Mormoopidae Pteronotus. Mystacinidae New Zealand short-tailed bats.

    Thyropteridae disc-winged bats. Mormoopidae Mormoops. Phyllostomidae New World leaf-nosed bats. Molossidae free-tailed bats. Emballonuridae sac-winged bats.

    Myzopodidae sucker-footed bats. Emballonuridae Taphozous. Natalidae funnel-eared bats. Vespertilionidae vesper bats. Genetic evidence indicates that megabats originated during the early Eocene , and belong within the four major lines of microbats.

    Yangochiroptera as above. In the s, a hypothesis based on morphological evidence stated the Megachiroptera evolved flight separately from the Microchiroptera.

    The flying primate hypothesis proposed that, when adaptations to flight are removed, the Megachiroptera are allied to primates by anatomical features not shared with Microchiroptera.

    For example, the brains of megabats have advanced characteristics. Although recent genetic studies strongly support the monophyly of bats, [7] debate continues about the meaning of the genetic and morphological evidence.

    The discovery of an early fossil bat from the million-year-old Green River Formation , Onychonycteris finneyi , indicates that flight evolved before echolocative abilities.

    It also had longer hind legs and shorter forearms, similar to climbing mammals that hang under branches, such as sloths and gibbons. This palm-sized bat had short, broad wings, suggesting that it could not fly as fast or as far as later bat species.

    Instead of flapping its wings continuously while flying, Onychonycteris probably alternated between flaps and glides in the air. This model of flight development, commonly known as the "trees-down" theory, holds that bats first flew by taking advantage of height and gravity to drop down on to prey, rather than running fast enough for a ground-level take off.

    The molecular phylogeny was controversial, as it pointed to microbats not having a unique common ancestry , which implied that some seemingly unlikely transformations occurred.

    The first is that laryngeal echolocation evolved twice in bats, once in Yangochiroptera and once in the rhinolophoids. This may have been used at first mainly to forage on the ground for insects and map out their surroundings in their gliding phase, or for communicative purposes.

    After the adaptation of flight was established, it may have been refined to target flying prey by echolocation. Bats are placental mammals.

    Around twenty years later, the German naturalist Johann Friedrich Blumenbach gave them their own order, Chiroptera. Microbats use echolocation for navigation and finding prey, but megabats apart from those in the genus Rousettus do not, relying instead on their eyesight.

    Below is a table chart following the bat classification of families recognized by various authors of the ninth volume of Handbook of the Mammals of the World published in [39].

    The head and teeth shape of bats can vary by species. In general, megabats have longer snouts, larger eye sockets and smaller ears, giving them a more dog-like appearance, which is the source of their nickname of "flying foxes".

    Small insect-eating bats can have as many as 38 teeth, while vampire bats have only Bats that feed on hard-shelled insects have fewer but larger teeth with longer canines and more robust lower jaws than species that prey on softer bodied insects.

    In nectar-feeding bats, the canines are long while the cheek-teeth are reduced. In fruit-eating bats, the cusps of the cheek teeth are adapted for crushing.

    Bats are the only mammals capable of sustained flight, as opposed to gliding , as in the flying squirrel. The finger bones of bats are much more flexible than those of other mammals, owing to their flattened cross-section and to low levels of calcium near their tips.

    The elongation of bat digits, a key feature required for wing development, is due to the upregulation of bone morphogenetic proteins Bmps.

    This crucial genetic alteration helps create the specialised limbs required for powered flight. The relative proportion of extant bat forelimb digits compared with those of Eocene fossil bats have no significant differences, suggesting that bat wing morphology has been conserved for over fifty million years.

    The wing bones of bats have a slightly lower breaking stress point than those of birds. As in other mammals, and unlike in birds, the radius is the main component of the forearm.

    Bats have five elongated digits, which all radiate around the wrist. The thumb points forward and supports the leading edge of the wing, and the other digits support the tension held in the wing membrane.

    The second and third digits go along the wing tip, allowing the wing to be pulled forward against aerodynamic drag , without having to be thick as in pterosaur wings.

    The fourth and fifth digits go from the wrist to the trailing edge , and repel the bending force caused by air pushing up against the stiff membrane.

    The wings of bats are much thinner and consist of more bones than the wings of birds, allowing bats to manoeuvre more accurately than the latter, and fly with more lift and less drag.

    These sensitive areas are different in bats, as each bump has a tiny hair in the centre, making it even more sensitive and allowing the bat to detect and adapt to changing airflow; the primary use is to judge the most efficient speed at which to fly, and possibly also to avoid stalls.

    The patagium is the wing membrane; it is stretched between the arm and finger bones, and down the side of the body to the hind limbs and tail.

    This skin membrane consists of connective tissue , elastic fibres , nerves , muscles , and blood vessels. The muscles keep the membrane taut during flight.

    The patagium is an extremely thin double layer of epidermis; these layers are separated by a connective tissue centre, rich with collagen and elastic fibres.

    The membrane has no hair follicles or sweat glands, except between the fingers. To achieve flight, a bat exerts force inwards at the points where the membrane meets the skeleton, so that an opposing force balances it on the wing edges perpendicular to the wing surface.

    This adaptation does not permit bats to reduce their wingspans, unlike birds, which can partly fold their wings in flight, radically reducing the wing span and area for the upstroke and for gliding.

    Hence bats cannot travel over long distances as birds can. Nectar- and pollen-eating bats can hover, in a similar way to hummingbirds. The sharp leading edges of the wings can create vortices , which provide lift.

    The vortex may be stabilised by the animal changing its wing curvatures. When not flying, bats hang upside down from their feet, a posture known as roosting.

    The ankle joint can flex to allow the trailing edge of the wings to bend downwards. This does not permit many movements other than hanging or clambering up trees.

    This difference is reflected in the structure of the cervical or neck vertebrae in the two groups, which are clearly distinct.

    Muscular power is needed to let go, but not to grasp a perch or when holding on. When on the ground, most bats can only crawl awkwardly.

    A few species such as the New Zealand lesser short-tailed bat and the common vampire bat are agile on the ground. Both species make lateral gaits the limbs move one after the other when moving slowly but vampire bats move with a bounding gait all limbs move in unison at greater speeds, the folded up wings being used to propel them forward.

    Vampire bat likely evolved these gaits to follow their hosts while short-tailed bats developed in the absence of terrestrial mammal competitors.

    Enhanced terrestrial locomotion does not appear to have reduced their ability to fly. Bats have an efficient circulatory system. They seem to make use of particularly strong venomotion, a rhythmic contraction of venous wall muscles.

    In most mammals, the walls of the veins provide mainly passive resistance, maintaining their shape as deoxygenated blood flows through them, but in bats they appear to actively support blood flow back to the heart with this pumping action.

    Bats possess a highly adapted respiratory system to cope with the demands of powered flight, an energetically taxing activity that requires a large continuous throughput of oxygen.

    In bats, the relative alveolar surface area and pulmonary capillary blood volume are larger than in most other small quadrupedal mammals.

    It takes a lot of energy and an efficient circulatory system to work the flight muscles of bats.

    Energy supply to the muscles engaged in flight require about double the amount compared to the muscles that do not use flight as a means of mammalian locomotion.

    In parallel to energy consumption, blood oxygen levels of flying animals are twice as much as those of their terrestrially locomoting mammals.

    As the blood supply controls the amount of oxygen supplied throughout the body, the circulatory system must respond accordingly.

    Therefore, compared to a terrestrial mammal of the same relative size, the bat's heart can be up to three times larger, and pump more blood.

    With its extremely thin membranous tissue, a bat's wing can significantly contribute to the organism's total gas exchange efficiency.

    When the bat has its wings spread it allows for an increase in surface area to volume ratio. The digestive system of bats has varying adaptations depending on the species of bat and its diet.

    As in other flying animals, food is processed quickly and effectively to keep up with the energy demand.

    Insectivorous bats may have certain digestive enzymes to better process insects, such as chitinase to break down chitin , which is a large component of insects.

    Nectivorous and frugivorous bats have more maltase and sucrase enzymes than insectivorous, to cope with the higher sugar contents of their diet.

    The adaptations of the kidneys of bats vary with their diets. Carnivorous and vampire bats consume large amounts of protein and can output concentrated urine ; their kidneys have a thin cortex and long renal papillae.

    Frugivorous bats lack that ability and have kidneys adapted for electrolyte -retention due to their low-electrolyte diet; their kidneys accordingly have a thick cortex and very short conical papillae.

    Their large wings are composed of the highly vascularized membranes, increasing the surface area, and leading to cutaneous evaporative water loss.

    They are also susceptible to blood urea poisoning if they do not receive enough fluid. The structure of the uterine system in female bats can vary by species, with some having two uterine horns while others have a single mainline chamber.

    Microbats and a few megabats emit ultrasonic sounds to produce echoes. Sound intensity of these echos are dependent on subglottic pressure.

    This muscle is located inside the larynx and it is the only tensor muscle capable of aiding phonation. This allows bats to detect, localise, and classify their prey in darkness.

    Bat calls are some of the loudest airborne animal sounds, and can range in intensity from 60 to decibels. The latter is most pronounced in the horseshoe bats Rhinolophus spp.

    In low-duty cycle echolocation, bats can separate their calls and returning echoes by time. They have to time their short calls to finish before echoes return.

    Bats contract their middle ear muscles when emitting a call, so they can avoid deafening themselves. The time interval between the call and echo allows them to relax these muscles, so they can hear the returning echo.

    In high-duty cycle echolocation, bats emit a continuous call and separate pulse and echo in frequency. The ears of these bats are sharply tuned to a specific frequency range.

    They emit calls outside this range to avoid deafening themselves. They then receive echoes back at the finely tuned frequency range by taking advantage of the Doppler shift of their motion in flight.

    The Doppler shift of the returning echoes yields information relating to the motion and location of the bat's prey. These bats must deal with changes in the Doppler shift due to changes in their flight speed.

    They have adapted to change their pulse emission frequency in relation to their flight speed so echoes still return in the optimal hearing range.

    In addition to echolocating prey, bat ears are sensitive to the fluttering of moth wings, the sounds produced by tymbalate insects, and the movement of ground-dwelling prey, such as centipedes and earwigs.

    The complex geometry of ridges on the inner surface of bat ears helps to sharply focus echolocation signals, and to passively listen for any other sound produced by the prey.

    These ridges can be regarded as the acoustic equivalent of a Fresnel lens , and exist in a large variety of unrelated animals, such as the aye-aye , lesser galago , bat-eared fox , mouse lemur , and others.

    By repeated scanning, bats can mentally construct an accurate image of the environment in which they are moving and of their prey. Many moth species have a hearing organ called a tympanum , which responds to an incoming bat signal by causing the moth's flight muscles to twitch erratically, sending the moth into random evasive manoeuvres.

    The eyes of most microbat species are small and poorly developed, leading to poor visual acuity , but no species is blind.

    Microbats may use their vision for orientation and while travelling between their roosting grounds and feeding grounds, as echolocation is effective only over short distances.

    Some species can detect ultraviolet UV. As the bodies of some microbats have distinct coloration, they may be able to discriminate colours.

    Megabat species often have eyesight as good as, if not better than, human vision. Their eyesight is adapted to both night and daylight vision, including some colour vision.

    Microbats make use of magnetoreception , in that they have a high sensitivity to the Earth's magnetic field , as birds do. Microbats use a polarity-based compass, meaning that they differentiate north from south, unlike birds, which use the strength of the magnetic field to differentiate latitudes , which may be used in long-distance travel.

    The mechanism is unknown but may involve magnetite particles. Most bats are homeothermic having a stable body temperature , the exception being the vesper bats Vespertilionidae , the horseshoe bats Rhinolophidae , the free-tailed bats Molossidae , and the bent-winged bats Miniopteridae , which extensively use heterothermy where body temperature can vary.

    The wings are filled with blood vessels, and lose body heat when extended. At rest, they may wrap their wings around themselves to trap a layer of warm air.

    Smaller bats generally have a higher metabolic rate than larger bats, and so need to consume more food in order to maintain homeothermy.

    Bats may avoid flying during the day to prevent overheating in the sun, since their dark wing-membranes absorb solar radiation. Bats may not be able to dissipate heat if the ambient temperature is too high; [] they use saliva to cool themselves in extreme conditions.

    Bats also possess a system of sphincter valves on the arterial side of the vascular network that runs along the edge of their wings. When fully open, these allow oxygenated blood to flow through the capillary network across the wing membrane; when contracted, they shunt flow directly to the veins, bypassing the wing capillaries.

    This allows bats to control how much heat is exchanged through the flight membrane, allowing them to release heat during flight. Many other mammals use the capillary network in oversized ears for the same purpose.

    Torpor , a state of decreased activity where the body temperature and metabolism decreases, is especially useful for microbats, as they use a large amount of energy while active, depend upon an unreliable food source, and have a limited ability to store fat.

    Torpid states last longer in the summer for megabats than in the winter. During hibernation , bats enter a torpid state and decrease their body temperature for Heterothermic bats during long migrations may fly at night and go into a torpid state roosting in the daytime.

    Unlike migratory birds, which fly during the day and feed during the night, nocturnal bats have a conflict between travelling and eating.

    The energy saved reduces their need to feed, and also decreases the duration of migration, which may prevent them from spending too much time in unfamiliar places, and decrease predation.

    In some species, pregnant individuals may not use torpor. Small prey may be absent in the diets of large bats as they are unable to detect them.

    Flight has enabled bats to become one of the most widely distributed groups of mammals. Bat roosts can be found in hollows, crevices, foliage, and even human-made structures, and include "tents" the bats construct with leaves.

    In temperate areas, some microbats migrate hundreds of kilometres to winter hibernation dens; [] others pass into torpor in cold weather, rousing and feeding when warm weather allows insects to be active.

    Different bat species have different diets, including insects, nectar, pollen, fruit and even vertebrates. Insectivorous bats may eat over percent of their body weight, while frugivorous bats may eat over twice their weight.

    The Chiroptera as a whole are in the process of losing the ability to synthesise vitamin C. Most microbats, especially in temperate areas, prey on insects.

    Fruit eating, or frugivory, is found in both major suborders. Bats prefer ripe fruit, pulling it off the trees with their teeth. They fly back to their roosts to eat the fruit, sucking out the juice and spitting the seeds and pulp out onto the ground.

    This helps disperse the seeds of these fruit trees, which may take root and grow where the bats have left them, and many species of plants depend on bats for seed dispersal.

    Nectar-eating bats have acquired specialised adaptations. These bats possess long muzzles and long, extensible tongues covered in fine bristles that aid them in feeding on particular flowers and plants.

    This is beneficial to them in terms of pollination and feeding. Their long, narrow tongues can reach deep into the long cup shape of some flowers.

    When the tongue retracts, it coils up inside the rib cage. Around species of flowering plant rely on bat pollination and thus tend to open their flowers at night.

    Some bats prey on other vertebrates, such as fish, frogs, lizards, birds and mammals. These bats locate large groups of frogs by tracking their mating calls, then plucking them from the surface of the water with their sharp canine teeth.

    They use echolocation to detect small ripples on the water's surface, swoop down and use specially enlarged claws on their hind feet to grab the fish, then take their prey to a feeding roost and consume it.

    A few species, specifically the common, white-winged , and hairy-legged vampire bats, feed only on animal blood hematophagy. The common vampire bat typically feeds on large mammals such as cattle ; the hairy-legged and white-winged vampires feed on birds.

    Bats are subject to predation from birds of prey , such as owls , hawks , and falcons , and at roosts from terrestrial predators able to climb, such as cats.

    Rydell and J. Speakman argue that bats evolved nocturnality during the early and middle Eocene period to avoid predators.

    Among ectoparasites , bats carry fleas and mites , as well as specific parasites such as bat bugs and bat flies Nycteribiidae and Streblidae.

    White nose syndrome is a condition associated with the deaths of millions of bats in the Eastern United States and Canada. The fungus is mostly spread from bat to bat, and causes the disease.

    Bats are natural reservoirs for a large number of zoonotic pathogens , [] including rabies , endemic in many bat populations, [] [] [] histoplasmosis both directly and in guano, [] Nipah and Hendra viruses , [] [] and possibly the ebola virus , [] [] whose natural reservoir is yet unknown.

    One review found that bats, rodents, and primates all harbored significantly more zoonotic viruses which can be transmitted to humans than other mammal groups, though the differences among the aforementioned three groups were not significant bats have no more zoonotic viruses than rodents and primates.

    Instead, more diverse groups had greater viral diversity. They seem to be highly resistant to many of the pathogens they carry, suggesting a degree of adaptation to their immune systems.

    Some bats lead solitary lives, while others live in colonies of more than a million. Temperate bat species may swarm at hibernation sites as autumn approaches.

    This may serve to introduce young to hibernation sites, signal reproduction in adults and allow adults to breed with those from other groups.

    Several species have a fission-fusion social structure , where large numbers of bats congregate in one roosting area, along with breaking up and mixing of subgroups.

    Within these societies, bats are able to maintain long-term relationships. Bats are among the most vocal of mammals and produce calls to attract mates, find roost partners and defend resources.

    These calls are typically low-frequency and can travel long distances. Males sing to attract females. Songs have three phrases: chirps, trills and buzzes, the former having "A" and "B" syllables.

    Bat songs are highly stereotypical but with variation in syllable number, phrase order, and phrase repetitions between individuals.

    Calls differ between roosting groups and may arise from vocal learning. The animals made slightly different sounds when communicating with different individual bats, especially those of the opposite sex.

    Bats in flight make vocal signals for traffic control. Greater bulldog bats honk when on a collision course with each other.

    Bats also communicate by other means. Male little yellow-shouldered bats Sturnira lilium have shoulder glands that produce a spicy odour during the breeding season.

    Like many other species, they have hair specialised for retaining and dispersing secretions. Such hair forms a conspicuous collar around the necks of the some Old World megabat males.

    Male greater sac-winged bats Saccopteryx bilineata have sacs in their wings in which they mix body secretions like saliva and urine to create a perfume that they sprinkle on roost sites, a behaviour known as "salting".

    Salting may be accompanied by singing. Most bat species are polygynous , where males mate with multiple females. Male pipistrelle, noctule and vampire bats may claim and defend resources that attract females, such as roost sites, and mate with those females.

    Males unable to claim a site are forced to live on the periphery where they have less reproductive success. For temperate living bats, mating takes place in late summer and early autumn.

    Females of some species have delayed fertilisation, in which sperm is stored in the reproductive tract for several months after mating.

    Mating occurs in late summer to early autumn but fertilisation does not occur until the following late winter to early spring.

    Other species exhibit delayed implantation , in which the egg is fertilised after mating, but remains free in the reproductive tract until external conditions become favourable for giving birth and caring for the offspring.

    During the delayed development the mother keeps the fertilised egg alive with nutrients. This process can go on for a long period, because of the advanced gas exchange system.

    For temperate living bats, births typically take place in May or June in the northern hemisphere; births in the southern hemisphere occur in November and December.

    Tropical species give birth at the beginning of the rainy season. The young emerges rear-first, possibly to prevent the wings from getting tangled, and the female cradles it in her wing and tail membranes.

    In many species, females give birth and raise their young in maternity colonies and may assist each other in birthing.

    Most of the care for a young bat comes from the mother. In monogamous species, the father plays a role. Allo-suckling, where a female suckles another mother's young, occurs in several species.

    This may serve to increase colony size in species where females return to their natal colony to breed.

    For the little brown bat, this occurs about eighteen days after birth. Weaning of young for most species takes place in under eighty days.

    The common vampire bat nurses its offspring beyond that and young vampire bats achieve independence later in life than other species.

    This is probably due to the species' blood-based diet, which is difficult to obtain on a nightly basis. The maximum lifespan of bats is three-and-a-half times longer than other mammals of similar size.

    Six species have been recorded to live over thirty years in the wild: the brown long-eared bat Plecotus auritus , the little brown bat Myotis lucifugus , Brandt's bat Myotis brandti , the lesser mouse-eared bat Myotis blythii the greater horseshoe bat Rhinolophus ferrumequinum , and the Indian flying fox Pteropus giganteus.

    Bat species that give birth to multiple pups generally have a shorter lifespan than species that give birth to only a single pup.

    Cave-roosting species may have a longer lifespan than non-roosting species because of the decreased predation in caves. A male Brandt's bat was recaptured in the wild after 41 years, making it the oldest known bat.

    Conservation statuses of bats as of according to the IUCN 1, species in total []. Groups such as the Bat Conservation International [] aim to increase awareness of bats' ecological roles and the environmental threats they face.

    In the United Kingdom, all bats are protected under the Wildlife and Countryside Acts , and disturbing a bat or its roost can be punished with a heavy fine.

    Many people put up bat houses to attract bats. The gates are designed not to limit the airflow, and thus to maintain the cave's micro-ecosystem.

    Fourteen species use bat houses. Bats are eaten in countries across Africa, Asia and the Pacific Rim. In some cases, such as in Guam, flying foxes have become endangered through being hunted for food.

    Since bats are mammals, yet can fly, they are considered to be liminal beings in various traditions. More positive depictions of bats exist in some cultures.

    In China, bats have been associated with happiness, joy and good fortune. Five bats are used to symbolise the "Five Blessings": longevity, wealth, health, love of virtue and peaceful death.

    The Weird Sisters in Shakespeare's Macbeth used the fur of a bat in their brew. The bat is a primary animal associated with fictional characters of the night, both villainous vampires , such as Count Dracula and before him Varney the Vampire , [] and heroes, such as the DC Comics character Batman.

    The bat is sometimes used as a heraldic symbol in Spain and France, appearing in the coats of arms of the towns of Valencia , Palma de Mallorca , Fraga , Albacete , and Montchauvet.

    Texas and Oklahoma are represented by the Mexican free-tailed bat, while Virginia is represented by the Virginia big-eared bat Corynorhinus townsendii virginianus.

    Insectivorous bats in particular are especially helpful to farmers, as they control populations of agricultural pests and reduce the need to use pesticides.

    This also prevents the overuse of pesticides, which can pollute the surrounding environment, and may lead to resistance in future generations of insects.

    Bat dung, a type of guano , is rich in nitrates and is mined from caves for use as fertiliser. The Congress Avenue Bridge in Austin, Texas , is the summer home to North America's largest urban bat colony, an estimated 1,, Mexican free-tailed bats.

    About , tourists a year visit the bridge at twilight to watch the bats leave the roost. From Wikipedia, the free encyclopedia.

    Order of flying mammals. For other uses, see Chiroptera disambiguation. See also: List of bats and List of fruit bats. Main articles: Bat flight and Bat wing development.

    Play media. Pipistrellus pulses. Recording of Pipistrellus pipistrellus bat time-expanded echolocation calls and social call. Further information: Bat virome.

    Main article: Human uses of bats. See also: List of bats by population. Endangered 6. Vulnerable 8. Near-threatened 6. Least concern Data deficient Extinct 0.

    Retrieved 9 September Online Etymology Dictionary. Retrieved 24 June A Greek-English Lexicon. Journal of Mammalian Evolution. Bibcode : Natur.

    Retrieved 10 September Bibcode : PNAS.. Journal of Mammalogy. University of California Museum of Paleontology. Molecular Biology and Evolution.

    It was crunchy. I continued to circle — flying fast — for a while and then our instructions must have been to bring our mind-experience to an end.

    I flew back to the cave and as I entered it, I was aware of a strong, pungent smell — the guano. As a human I found it unusual and unpleasant.

    I came to rest upside down again on the cave roof, surrounded by other bats, sensing that some of them were holding their babies.

    I have never visited a bat cave, gone sky diving, or eaten insects. Although I had the dual sense of being both the bat and the observer, it was clear that I was experiencing being in a bat body as part of a bat community and sensing, moving, feeling, tasting, touching, and smelling with bat physical abilities in bat surroundings.

    Where did this highly sensate, strange and clear experience come from? To build something you have to understand it precisely. Who knows, it might eventually explain the mystery of our own being.

    We have already developed artificial intelligence, but I do not believe that we can ever create a conscious machine.

    Sometimes it means being alert rather than comatose, or it can mean knowing that you know. Allo-suckling, where a female suckles another mother's young, occurs in several species.

    This may serve to increase colony size in species where females return to their natal colony to breed. For the little brown bat, this occurs about eighteen days after birth.

    Weaning of young for most species takes place in under eighty days. The common vampire bat nurses its offspring beyond that and young vampire bats achieve independence later in life than other species.

    This is probably due to the species' blood-based diet, which is difficult to obtain on a nightly basis. The maximum lifespan of bats is three-and-a-half times longer than other mammals of similar size.

    Six species have been recorded to live over thirty years in the wild: the brown long-eared bat Plecotus auritus , the little brown bat Myotis lucifugus , Brandt's bat Myotis brandti , the lesser mouse-eared bat Myotis blythii the greater horseshoe bat Rhinolophus ferrumequinum , and the Indian flying fox Pteropus giganteus.

    Bat species that give birth to multiple pups generally have a shorter lifespan than species that give birth to only a single pup.

    Cave-roosting species may have a longer lifespan than non-roosting species because of the decreased predation in caves. A male Brandt's bat was recaptured in the wild after 41 years, making it the oldest known bat.

    Conservation statuses of bats as of according to the IUCN 1, species in total []. Groups such as the Bat Conservation International [] aim to increase awareness of bats' ecological roles and the environmental threats they face.

    In the United Kingdom, all bats are protected under the Wildlife and Countryside Acts , and disturbing a bat or its roost can be punished with a heavy fine.

    Many people put up bat houses to attract bats. The gates are designed not to limit the airflow, and thus to maintain the cave's micro-ecosystem. Fourteen species use bat houses.

    Bats are eaten in countries across Africa, Asia and the Pacific Rim. In some cases, such as in Guam, flying foxes have become endangered through being hunted for food.

    Since bats are mammals, yet can fly, they are considered to be liminal beings in various traditions. More positive depictions of bats exist in some cultures.

    In China, bats have been associated with happiness, joy and good fortune. Five bats are used to symbolise the "Five Blessings": longevity, wealth, health, love of virtue and peaceful death.

    The Weird Sisters in Shakespeare's Macbeth used the fur of a bat in their brew. The bat is a primary animal associated with fictional characters of the night, both villainous vampires , such as Count Dracula and before him Varney the Vampire , [] and heroes, such as the DC Comics character Batman.

    The bat is sometimes used as a heraldic symbol in Spain and France, appearing in the coats of arms of the towns of Valencia , Palma de Mallorca , Fraga , Albacete , and Montchauvet.

    Texas and Oklahoma are represented by the Mexican free-tailed bat, while Virginia is represented by the Virginia big-eared bat Corynorhinus townsendii virginianus.

    Insectivorous bats in particular are especially helpful to farmers, as they control populations of agricultural pests and reduce the need to use pesticides.

    This also prevents the overuse of pesticides, which can pollute the surrounding environment, and may lead to resistance in future generations of insects.

    Bat dung, a type of guano , is rich in nitrates and is mined from caves for use as fertiliser. The Congress Avenue Bridge in Austin, Texas , is the summer home to North America's largest urban bat colony, an estimated 1,, Mexican free-tailed bats.

    About , tourists a year visit the bridge at twilight to watch the bats leave the roost. From Wikipedia, the free encyclopedia.

    Order of flying mammals. For other uses, see Chiroptera disambiguation. See also: List of bats and List of fruit bats. Main articles: Bat flight and Bat wing development.

    Play media. Pipistrellus pulses. Recording of Pipistrellus pipistrellus bat time-expanded echolocation calls and social call. Further information: Bat virome.

    Main article: Human uses of bats. See also: List of bats by population. Endangered 6. Vulnerable 8. Near-threatened 6. Least concern Data deficient Extinct 0.

    Retrieved 9 September Online Etymology Dictionary. Retrieved 24 June A Greek-English Lexicon. Journal of Mammalian Evolution. Bibcode : Natur. Retrieved 10 September Bibcode : PNAS..

    Journal of Mammalogy. University of California Museum of Paleontology. Molecular Biology and Evolution.

    Several molecular studies have shown that Chiroptera belong to the Laurasiatheria represented by carnivores, pangolins, cetartiodactyls, eulipotyphlans, and perissodactyls and are only distantly related to dermopterans, scandentians, and primates.

    Nikaido et al. Journal of Molecular Evolution. Bibcode : JMolE.. Systematic Biology. Current Biology. Bibcode : Sci PLOS Currents. BBC News. Retrieved 17 December Wainwright, P.

    Ecological Morphology: Integrative Organismal Biology. University of Chicago Press. The Quarterly Review of Biology.

    Proceedings of the National Academy of Sciences. Bibcode : PNAS Bibcode : PLoSO Acta Chiropterologica. Scientific Reports. Bibcode : NatSR The Biology of Bats.

    Oxford University Press. Princeton University Press. Journal of Experimental Biology. Trends in Ecology and Evolution.

    Handbook of the Mammals of the World — Volume 9. Barcelona: Lynx Ediciones. University of California Press. In MacDonald, D.

    The Encyclopedia of Mammals 2nd ed. Mammalian Species. Functional Ecology. Science and Society. Royal Society Open Science.

    Bibcode : RSOS Modelling the Flying Bird. Cell Reports. Retrieved 31 October Proceedings Baylor University. Medical Center.

    Archived from the original PDF on 22 July Journal of Anatomy. Philosophical Transactions of the Royal Society of London. American Journal of Physiology.

    Regulatory, Integrative and Comparative Physiology. National Geographic. Retrieved 10 June Retrieved 9 August Respiration Physiology.

    Genetics Research. Wildcare Australia. American Zoologist. The Journal of the Acoustical Society of America.

    Bibcode : ASAJ.. Air Force Institute of Technology. Bibcode : NW In Hedwig, B. Insect Hearing and Acoustic Communication.

    In Hoy, R. Comparative Hearing: Insects. Springer Handbook of Auditory Research. Online extra. Retrieved 14 November Bibcode : PLoSO..

    Journal of Comparative Physiology B. Journal of Thermal Biology. Comparative Biochemistry and Physiology. Integrative and Comparative Biology. Functional and Evolutionary Ecology of Bats.

    Canadian Journal of Zoology. Animal Life Resource. Retrieved 14 June EDGE Species. Retrieved 10 April Retrieved 1 November Walker's Mammals of the World.

    Bat Conservation Trust. Archived from the original on 5 January Retrieved 16 January Smithsonian Institution. British Journal of Ophthalmology.

    Journal of Zoology. Retrieved 19 December June The Southwestern Naturalist. Comparative Biochemistry and Physiology B. Paul; Lindner, Daniel L. Penn State University.

    Retrieved 13 September Annual Review of Entomology. Physiology and Behavior. New York Botanical Garden. Retrieved 14 September National Geographic News.

    National Geographic Society. Archived from the original on 6 June Retrieved 18 June Behavioral Ecology and Sociobiology.

    Bats in Agriculture. A Ministry of Agriculture Publication. Scientific American. Bibcode : SciAm. Johns Hopkins Press.

    Archived from the original PDF on 15 December Retrieved 14 December Biological Journal of the Linnean Society. Revista Brasileira de Zoologia.

    Biological Reviews. National Wildlife Health Center, U. Geological Survey. Archived from the original on 30 September Retrieved 3 June Blehert, D.

    Canadian Cooperative Wildlife Health Centre. CBS Philadelphia. Retrieved 18 December Postmedia Network. Retrieved 21 April Mena Report.

    The National Science Foundation. Illinois Department of Natural Resources. Texas Parks and Wildlife. Retrieved 15 December October Reviews in Medical Virology.

    The currently known viruses that have been found in bats are reviewed and the risks of transmission to humans are highlighted. Revue Scientifique et Technique.

    Clinical Microbiology Reviews. Viruses: Essential Agents of Life. Centers for Disease Control and Prevention. Nature Reviews Microbiology. Journal of General Virology.

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