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Mexican free-tailed bat

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TheMexican free-tailed batorBrazilian free-tailed bat(Tadarida brasiliensis) is a medium-sizedbatnative toNorth,Central,andSouth Americaand theCaribbean,so named because its tail can be almost half its total length and is not attached to itsuropatagium.It has been claimed to have the fastest horizontal speed of any animal, reaching topground speedsover 99 mph (160 km/h).[2]It also flies the highest among bats, at altitudes around 3,300 m (10,800 ft).[3]

Mexican free-tailed bat
A Mexican free-tailed bat in the wild
Song of male, slowed eight times
Scientific classificationEdit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Molossidae
Genus: Tadarida
Species:
T. brasiliensis
Binomial name
Tadarida brasiliensis
Subspecies
  • T. b. antillularum
  • T. b. bahamensis
  • T. b. brasiliensis
  • T. b. constanzae
  • T. b. cynocephali
  • T. b. intermedia
  • T. b. mexicana
  • T. b. murina
  • T. b. muscula
Mexican free-tailed bat range

It is regarded as one of the most abundantmammalsinNorth America.Its proclivity towards roosting in huge numbers at relatively few locations makes it vulnerable tohabitat destructionin spite of its abundance. For instance, up to 1.5 million bats reside underjust one bridge in Austin.TheTexas Legislaturedesignated the Mexican free-tailed bat the state (flying) mammal in 1995.[4]

Taxonomy

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The Mexican free-tailed bat wasdescribedas a new species in 1824 by French zoologistIsidore Geoffroy Saint-Hilaire.Geoffroy placed it in the now-defunct genusNyctinomuswith a binomial name ofNyctinomus brasiliensis.[5] Theholotypehad been collected inBrazil.[6] Molecular sequence data indicateT. brasiliensis's closest relatives are thesister speciesSauromys petrophilusofSouth AfricaandTadarida aegyptiacaof Africa and South Asia. These three species form acladebelieved to be about 18 million years old.[7]

Physical description

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Mexican free-tailed bats are typically 9 cm (3.5 in) in length and weigh around 7–12 g (0.25–0.42 oz) with females tending to be slightly heavier than males by 1-2 grams for increased fat storage to use during gestation and nursing.[8] Their tails are almost half their total length and stretch beyond theuropatagium,giving them the name "free-tailed" bats. Their ears are wide, rounded, and large compared to their heads, nearly meeting at the front of the face, but distinctly not joined at the midline and projecting anterodorsally from just before the muzzle to the back of the head. They use their large ears to help them find prey usingecholocation.T. brasiliensisis distinguished among North AmericanTadaridabats in possessing deep wrinkles on the upper lip and in having a Z-shaped upper third molar, which is used for grinding insects. These individuals possess canines which are larger in males than in females.[8]The wings are elongated and narrow with pointed tips, making them well-equipped for quick, straight flight patterns. Their fur color ranges from dark brown to gray. The Mexican free-tailed bat's large feet have distinct long, white bristles.[9]These bristles, namely those on digits one and five and the toes, as well as on the edge of theuropatagium,arephotoluminescentunderultravioletlight. The function of this trait, if any, are unknown.[10]

Showing the bristles (photo byU.S. Fish and Wildlife Service)

The dental formula ofTadarida brasiliensisis1.1.1.33.1.2.3.[11]

Range and ecology

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Bats flying near Frio Cave in Concan, Texas

The Mexican free-tailed bat ranges from the southern half of the continental United States through most of Mexico, and through most of Central America into South America. Their range in South America is less understood where they live in the eastern Brazilian highlands and coast, the northeastern Andes, the coast of Peru and northern Chile, and the center ofArgentina.[8]They are absent in much of the Amazon rainforest. They are also found in the Caribbean, and are native to all of the Greater Antilles and 11 of the Lesser Antilles.[12]The largest known colony is found atBracken Cave,north ofSan Antonio,Texas, with nearly 20 million bats; the bats from this colony congregate in huge numbers at altitudes between 180 and 1,000 m (590 and 3,280 ft), and even as high as 3,000 m (9,800 ft).

Habitat

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Mexican free-tailed bats roost primarily in caves. However, they also roost in buildings of any type as long as they have access to openings and dark recesses in ceilings or walls.[8]The bats can make roosting sites of buildings regardless of "age, height, architecture, construction materials, occupancy by humans and compass orientation".[8]Caves, though, need to have enough wall and ceiling space to fit millions of bats.[8]Before buildings, free-tailed bats in the Southeastern United States probably roosted in the hollows of trees such as red mangrove, black mangrove, white mangrove, and cypress. However, most bats in Florida seem to prefer buildings and other man-made structures over natural roosts.[8]Caves in Florida tend to be occupied mostly by thesoutheastern myotis.Caves in Florida tend to have pools of water on the floor and the free-tailed bats do not need as much relative humidity as the southeastern myotis.[8]

Migration

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Mexican free-tailed bats, emerging fromCarlsbad Caverns,Carlsbad Caverns National Park,New Mexico

Mexican free-tailed bats in southeastern Nevada, southwestern Utah, western Arizona, and southeastern California come together to migrate southwest to southern California andBaja California.[8]Bats in southeastern Utah, southwestern Colorado, western New Mexico, and eastern Arizona travel through the western edge of theSierra Madre Orientalinto Jalisco, Sinaloa, and Sonora. Some bats that summer in Kansas, Oklahoma, eastern New Mexico, and Texas migrate southward to South Texas[13]and Mexico.[8]Some bat populations in other areas of North America do not migrate, but are residents and may make seasonal changes in roost sites.[8]While this migration is extremely extensive, a way must exist for these bats to continuously congregate in the same roosts every year.T. brasiliensisbats have copious numbers of sebaceous glands covering their entire bodies. These glands leave a trace of a lasting scent to which other bats are sensitive. This odor is crucial to marking habitual roosts.[14]

Dusk emergence of bats at the Congress Avenue Bridge in Austin, Texas

Bats ranging eastward from East Texas do not migrate, but local shifts in roost usage often occur seasonally.[8]Also, a regional population that ranges from Oregon to California, has a year-round residence.

Diet

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Mexican free-tailed bats are primarily insectivores. They hunt their prey using echolocation. The bats eatmoths,beetles,dragonflies,flies,true bugs,wasps,andants.They usually catch flying prey in flight.[15]Large numbers of Mexican free-tailed bats fly hundreds of meters above the ground in Texas to feed on migrating insects.[16]The consumption of insects by these bats can be quite significant.[17][18]

The onset of evening emergence from caves and the end of returns at dawn tend to correlate with sunset and sunrise, respectively, with dawn returns ending increasingly later in correlation to sunrise throughout the summer season. Reproductive females tended to emerge earlier in the evening and return later at dawn to gather the extra nutrients they require for reproduction and offspring care.[19]T. brasiliensisbats spend around 60% of their active time foraging while aerial, mostly hunting at heights of 6–15 m (20–49 ft).[8]Individuals will fly 50 km (31 mi) in one night to reach foraging areas. The loose, wrinkled skin around the mouth is thought to aid in expanding the mouth during flight to catch insects.T. brasiliensisrequires free water sources to maintain water balance: individuals from the arid environment of New Mexico tend to have thickerrenaltissue layers compared toT. brasiliensisfrom the less arid California, revealing that urine concentrating abilities and water use varies geographically with aridity.[20]

Health and mortality

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One individual bat was recorded to have lived eight years, based on dentition.[21][page needed]Predators of the bat include large birds such asred-tailed hawk,American kestrels,great horned owls,barn owls,andMississippi kites.[8][22]Mammal predators includeVirginia opossums,striped skunks,andraccoons.[8]Snakes such aseastern coachwhipsand gopher snakes may also prey on them, but at a lesser extent. Certain types of beetles prey on neonate and juvenile bats that have fallen to the ground.[8]This species seems to have a low incidence of rabies, at least in the United States.[8]They do, however, contain certain pesticides.[8]

White-nose syndrome(WNS) caused by infection by the fungusPseudogymnoascus destructanshas increased in prevalence since 2006, mostly affecting species of bats that roost underground such as thelittle brown bat.The fungus, now suspected to have spread from accidental transportation by human cave workers, is thought to cause frequent arousals during bat hibernation, causing an individual to use fat stores much more quickly and die of starvation before the end of winter. WNS can affectT. brasiliensis,but has yet to be greatly introduced to their habitat due to their preference for more arid caves. WNS has low prevalence in the subtropical and tropical regions whereT. brasiliensisresides.[23]

Certain chemicals in the fur of these bats have antimicrobial activity against common mammalian skin pathogens. The chemicalnonanalis found in such a concentration that its antimicrobial activity can inhibit the growth of two fungal pathogens that cause ringworm (Trichophyton mentagrophytesandT. rubrum), as well asMalassezia furfur,ayeast.Two other common skin disease-causing microbes that are inhibited by the hair's concentration of nonanal includeStaphylococcus aureusandCutibacterium acnes.[24]

Behavior

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A male displays and sings in the presence of females (watch in slow motion).

Mexican free-tailed bats are nocturnal foragers and begin feeding after dusk. They travel 50 km in a quick, direct flight pattern to feed. This species flies the highest among bats, at altitudes around 3,300 m (10,800 ft).[3]Bats appear to be most active in late morning and afternoon between June and September.[25]Free-tailed bats are more active in warm weather.[26]

The species has been measured at aground speedof 160 km/h (99 mph), measured by an aircraft tracking device.[27]The measurement methodology did not simultaneously record wind speed and ground speed, so the observations could have been affected by stronglocal gusts,and the bat's maximum air speed remains uncertain.[28]

Guano and ammonia

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Among bats that roost in great, concentrated numbers,T.brasiliensisroosts produce large quantities of urine andguano;from 22 to 99 metric tons per cave and over 18,700 metric tons are produced annually. The concentrated waste generates high levels of toxic ammonia in the air of a cave.T. brasiliensisindividuals have genetic adaptation for withstanding or countering these high levels of ammonia. The bats' content of CO2and protein in respiratory mucus and CO2dissolved in blood plasma increase with increasing levels of dissolved ammonia, providing the bats with a buffer against pH change. This allows the bats to filter out a large majority of inhaled ammonia before it reaches toxic levels in the blood.T. brasiliensisbats are thought to swarm in spiraling motions within caves to ventilate ammonia and renew the air.[8]

Echolocation

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Mexican free-tailed bats useecholocationfor navigation and detecting prey. Traveling calls are of a brief but constant frequency. However, they switch modulated frequency calls between 40 and 75 kHz if they detect something.[29]Typically, the frequency range of their echolocation is between 49 and 70 kHz, but can be between 25 and 40 kHz if something crosses their path while in flight.[29]

On 6 November 2014, Aaron Corcoran, a biologist atWake Forest University,North Carolina, reported online inSciencethat his team and he had detected Mexican free-tailed bats emitting ultrasonic vocalizations that had the effect of jamming the echolocation calls of a rival bat species hunting moths. The 'jamming' call led to an increased chance of the rival missing its prey, which the Mexican free-tailed bat was then able to eat itself. Earlier researchers had discovered some 15 types of social calls made by Mexican free-tailed bats and reported that they could adjust their calls to avoid interfering with others in range of their calls.[30][31]

Mating and reproduction

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Free-tailed bats roosting at a cave in the Bahamas

During the breeding season, females aggregate into maternity roosts. The size of these roosts depends on the environment, with caves having the larger roosts. Mating can occur in an aggressive or passive form. In the aggressive form, the male controls the female's movements, keeping her away from the other bats in the roost.[32]He also tends to vocalize when mating. During passive copulation, the males simply flies to a female in her roost and quietly mounts her with no resistance. This species is apromiscuousbreeder and both sexes copulate with multiple partners.[32]Females become sexually mature at about 9 months, while males take even longer, at two years. Females enterestrusonce a year, which typically lasts five weeks in the spring. The gestation period of the bat lasts 11–12 weeks, with only one young being born. A number of pups are left in "creches", while their mothers roost elsewhere. The female uses vocalizations and scent to identify her pup. The mother imprints her scent on the young early on.[33]However, young try to steal a suckle from any female that passes through the cluster. Through examining the genotypes of female-pup nursing pairs sampled from colonies in Texas, it has been measured that nursing is partially selective along genetic lines, with approximately 17% of mothers nursing pups that were not their offspring, ostensibly due to the difficulty of consistently locating and selectively nursing their own pups in extremely large colonies.[34]A mother will nurse her young daily, and by 4–7 weeks old they are full grown, fully weaned, and independent.[35]

Conservation

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Though abundant and widespread, some local populations have prompted protection and conservation efforts. For instance, during the spring and summer, one of the largest Mexican free-tailed bat populations inhabits Cueva de la Boca, a cave nearMonterrey,Mexico. In 2006, the Mexican environmental conservation NGO,Pronatura Noreste,purchased the property. Because of a reduction by more than 95% of the original 20 million bat population to 600,000, as a result of vandalism, pollution, and uncontrolled tourism, the organization decided to buy the property to place it under conservation. Other species of high ecological value that inhabit the cavern are also being protected. Similarly,Bat Conservation InternationalboughtBracken Cavefrom private ownership in 1992. BCI planned to revert any land changes that were a result of farming or ranching in order to conserve the biodiversity and wildlife there. Preserving the land around Bracken Cave was important, as it is home to the world's largest bat colony, and any human encroachment would be detrimental to their population. BCI also protects the land from artificial light pollution, which can distress the bats.[36][37]

Economic importance

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InAustin, Texas,a colony of Mexican free-tailed bats summers (they winter inMexico) under theCongress Avenue Bridge10 blocks south of theTexas State Capitol.It is the largest urban colony in North America, with an estimated 1,500,000 bats.[38]Each night they eat 10,000 to 30,000 lb (4,500 to 13,600 kg) of insects. Each year, they attract 100,000 tourists who come to watch them. InHouston,Texas, a colony is living under the Waugh Street Bridge overBuffalo Bayou.It is the home to 250,000 bats and also attracts viewers. The Mexican free-tailed bat is the official flying mammal of the state of Texas,[39]as well as Oklahoma.[40]

Hundreds of tons of guano were mined in Texas annually between 1900 and 1980. In the early 20th century, bat guano was Texas' largest mineral export, before oil. In 1863, a gun powder factory opened near San Antonio, the saltpeter of which was provided by local guano mines.[41]

See also

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References

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  1. ^Barquez, R.; Diaz, M.; Gonzalez, E.; Rodriguez, A.; Incháustegui, S.; Arroyo-Cabrales, J. (2015)."Tadarida brasiliensis".IUCN Red List of Threatened Species.2015:e.T21314A22121621.doi:10.2305/IUCN.UK.2015-4.RLTS.T21314A22121621.en.
  2. ^"Speedy Bat Smashes Speed Record".batcon.org.Bat Conservation International.9 November 2016.Retrieved20 October2023.
  3. ^abWilliams, T. C.; Ireland, L. C.; Williams, J. M. (1973). "High Altitude Flights of the Free-Tailed Bat,Tadarida brasiliensis,Observed with Radar ".Journal of Mammalogy.54(4): 807.doi:10.2307/1379076.JSTOR1379076.
  4. ^https://capitol.texas.gov/tlodocs/74R/billtext/html/SC00095S.htm
  5. ^Geoffroy, I. (1824)."Par M. Isidore Geoffroy Saint-Hilaire. Lu á la Société d'histoire naturelle de Paris le vendredi 5 mars 1824"[By Mr. Isidore Geoffroy Saint-Hilaire. Read at the Natural History Society of Paris on Friday, 5 March 1824].Annales des sciences naturelles(in French).1:342–343.
  6. ^Smith Miller, Gerrit; Rehn, James A. G. (1901).Systematic Results of the Study of North American Land Mammals to the Close of the Year 1900.Society of Natural History. p.271.
  7. ^Ammerman, LK; Lee, DN; Tipps, T (2012)."First molecular insights into the evolution of free-tailed bats in the subfamily Molossinae (Molossidae, Chiroptera)".Journal of Mammalogy.93(1): 12–28.doi:10.1644/11-mamm-a-103.1.
  8. ^abcdefghijklmnopqrsWilkins, K. (1989). "Tadarida brasiliensis".Mammalian Species(331): 1–10.doi:10.2307/3504148.JSTOR3504148.
  9. ^"Brazilian Free-tailed Bat (Tadarida brasiliensis)".Archived fromthe originalon 11 May 2000.
  10. ^Gual-Suárez, Fernando; Ramos-H., Daniel; García, Falco; Pérez-Montes, L. Ernesto; Narro Delgado, Alonso; Medellín, Rodrigo A. (8 August 2024)."Ultraviolet-induced photoluminescent bristles on the feet of the Mexican free-tailed bat (Tadarida brasiliensis)".Mammalian Biology.doi:10.1007/s42991-024-00441-3.ISSN1618-1476.
  11. ^Reid, F. (2006).A field guide to mammals of North America, north of Mexico.Vol. 4. Houghton Mifflin Harcourt. p. 136.
  12. ^Baker, R. J., Genoways, H. H. (1978). "Zoogeography of Antillean bats", pp. 53–97 inZoogeography in the Caribbean,F. B. Gill (ed.). Philadelphia: Acad
  13. ^Glass BP (1982). "Seasonal movements of Mexican free-tail batsTadarida brasiliensis mextcanabanded in the Great Plains ".Southwestern Nat.27(2): 127–133.doi:10.2307/3671136.JSTOR3671136.
  14. ^Glass, Bryan P. (1982). "Seasonal Movements of Mexican Freetail Bats Tadarida brasiliensis mexicana Banded in the Great Plains".The Southwestern Naturalist.27(2): 127–133.doi:10.2307/3671136.JSTOR3671136.
  15. ^McWilliams, Lisa A. (2005)."Variation in Diet of the Mexican Free-Tailed Bat (Tadarida brasiliensis mexicana) ".Journal of Mammalogy.86(3): 599–605.doi:10.1644/1545-1542(2005)86[599:VIDOTM]2.0.CO;2.S2CID86220457.
  16. ^McCracken, G. F.; Gillam, E. H.; Westbrook, J. K.; Lee, Y. F.; Jensen, M. L.; Balsley, B. B. (2008)."Brazilian free-tailed bats (Tadarida brasiliensis: Molossidae, Chiroptera) at high altitude: Links to migratory insect populations".Integrative and Comparative Biology.48(1): 107–18.doi:10.1093/icb/icn033.PMID21669777.
  17. ^Corrigan, Robert.Do Bats Control Mosquitoes?Archived2 April 2015 at theWayback Machinetexasmosquito.org
  18. ^Animal Fact Sheet: Mexican Free-Tailed Bat.Desert Museum.
  19. ^Lee, Y. F.; McCracken, G. F. (2001)."Timing and variation in the emergence and return of Mexican free-tailed bats, Tadarida brasiliensis mexicana"(PDF).Zoological Studies.40(4): 309–316.
  20. ^Bassett, JE (1982). "Habitat aridity and intraspecific differences in the urine concentrating ability of insectivorous bats".Comparative Biochemistry and Physiology.72(4): 703–708.doi:10.1016/0300-9629(82)90152-9.PMID6126307.
  21. ^Gannon, M.; Kurta, A.; Rodriquez-Duran, A.; Willig, M. (2005).Bats of Puerto Ricoo: An Island Focus and a Caribbean Perspective.Jamaica: The University of the West Indies Press.ISBN976-640-175-6.
  22. ^Mikula, P.; Morelli, F.; Lučan, R. K.; Jones, D. N.; Tryjanowski, P. (2016). "Bats as prey of diurnal birds: a global perspective".Mammal Review.46(3): 160.doi:10.1111/mam.12060.
  23. ^Fenton, B (2012)."Bats and white-nose syndrome".PNAS.109(18): 6794–6795.Bibcode:2012PNAS..109.6794F.doi:10.1073/pnas.1204793109.PMC3344961.PMID22517743.
  24. ^Wood, William F.; Szewczak, Joseph M. (2007). "Volatile Antimicrobial Compounds in the Pelage of the Mexican Free-tailed Bat, Tadarida brasiliensis mexicana".Biochemical Systematics and Ecology.35(9): 566–568.Bibcode:2007BioSE..35..566W.doi:10.1016/j.bse.2007.04.002.
  25. ^Svoboda, P. L.; Choate, J. R. (1987). "Natural History of the Brazilian Free-Tailed Bat in the San Luis Valley of Colorado".Journal of Mammalogy.68(2): 224.doi:10.2307/1381461.JSTOR1381461.
  26. ^Allen, L. C.; Turmelle, A. S.; Mendonça, M. T.; Navara, K. J.; Kunz, T. H.; McCracken, G. F. (2009)."Roosting ecology and variation in adaptive and innate immune system function in the Brazilian free-tailed bat (Tadarida brasiliensis) "(PDF).Journal of Comparative Physiology B.179(3): 315–23.doi:10.1007/s00360-008-0315-3.PMC7087743.PMID19002470.
  27. ^McCracken, Gary F.; Safi, Kamran; Kunz, Thomas H.; Dechmann, Dina K. N.; Swartz, Sharon M.; Wikelski, Martin (9 November 2016)."Airplane tracking documents the fastest flight speeds recorded for bats".Royal Society Open Science.3(11): 160398.Bibcode:2016RSOS....360398M.doi:10.1098/rsos.160398.PMC5180116.PMID28018618.
  28. ^Photopoulos, Julianna (9 November 2016)."Speedy bat flies at 160 km/h, smashing bird speed record".New Scientist.Retrieved11 November2016.But not everyone is convinced. Graham Taylor at the University of Oxford says that errors in estimating bat speed by measuring the distance moved between successive positions could be huge. "So I think it would be premature to knock birds off their pedestal as nature's fastest fliers just yet," he says. "These bats are indeed flying very fast at times, but this is based on their ground speed," says Anders Hedenström at the University of Lund in Sweden. "Since they did not measure winds at the place and time where the bats are flying, one can therefore not exclude that the top speeds are not bats flying in a gust."
  29. ^abGillam, Erin H.; McCracken, Gary F. (2007). "Variability in the echolocation ofTadarida brasiliensis:Effects of geography and local acoustic environment ".Animal Behaviour.74(2): 277.doi:10.1016/j.anbehav.2006.12.006.S2CID53174117.
  30. ^Morell, Virginia (6 November 2014)."Holy blocked bat signal! Bats jam each other's calls".new.sciencemag.org.Retrieved8 November2014.
  31. ^Hogenboom, Melissa (7 November 2014)."Bats sabotage rivals' senses with sound in food race".BBC News.Retrieved8 November2014.
  32. ^abKeeley, Annika T. H.; Keeley, Brian W. (2004)."The Mating System ofTadarida brasiliensis(Chiroptera: Molossidae) in a Large Highway Bridge Colony ".Journal of Mammalogy.85:113–119.doi:10.1644/BME-004.
  33. ^Loughry, W. J.; McCracken, G. F. (1991). "Factors Influencing Female-Pup Scent Recognition in Mexican Free-Tailed Bats".Journal of Mammalogy.72(3): 624.doi:10.2307/1382150.JSTOR1382150.
  34. ^McCracken, Gary F. (9 March 1984)."Communal Nursing in Mexican Free-Tailed Bat Maternity Colonies".Science.223(4640): 1090–1091.Bibcode:1984Sci...223.1090M.doi:10.1126/science.223.4640.1090.PMID17830157.S2CID206572086.
  35. ^Kunz, Thomas H.; Robson, Simon K. (1995)."Postnatal Growth and Development in the Mexican Free-Tailed Bat (Tadarida brasiliensis mexicana): Birth Size, Growth Rates, and Age Estimation "(PDF).Journal of Mammalogy.76(3): 769.doi:10.2307/1382746.JSTOR1382746.
  36. ^"Bracken Cave Preserve – Texas Hill Country Region".Texas Parks and Wildlife Department.Retrieved24 September2020.
  37. ^"Preserving Bracken Cave and the largest bat colony in the world".batcon.org.Bat Conservation International.
  38. ^"Congress Avenue Bridge".Congress Avenue Bridge Bat Colony.Archived from the original on 12 November 2008.{{cite web}}:CS1 maint: bot: original URL status unknown (link)
  39. ^"Texas State Symbols".Texas State Library and Archives Commission.
  40. ^"Senate Selects Bat as States Flying Mammal | Oklahoma Senate".oksenate.gov.8 March 2006.Retrieved6 November2023.
  41. ^Tuttle, Merlin D. (1995)."The lives of Mexican free-tailed bats".Bats Magazine.12(3). Bats Conservation International. Archived fromthe originalon 1 April 2023.
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