Behavioral Ecology and Sociobiology

, Volume 6, Issue 3, pp 211–218 | Cite as

The development of flight, foraging, and echolocation in the little brown bat (Myotis lucifugus)

  • Edward R. Buchler


  1. 1.

    Two colonies of little brown bats,Myotis lucifugus (Vespertilionidae), were studied for two summers. The young could not perform practice flights within the buildings where they roosted. Young of estimated relative ages and adults were light-tagged, released, and tracked to determine the development of flying skills and foraging behavior. Orientation sounds were observed and tape-recorded.

  2. 2.

    The earliest flights at ca. 19–20 days of age were usually relatively brief (a few tens of seconds or less) but still remarkable considering the absence of practice. The young at first emerged after adults had left to forage, avoided entering acoustically complex habitats, flew slowly within about 50 m of the roost, and made frequent, awkward landings. They avoided other flying bats and did not pursue insects. More time was spent in rest than flight.

  3. 3.

    Slightly older young, beginning at ca. 22–23 days, gradually increased their flight distance and duration (Table 1) and began to hunt insects in clearings or at the forest edge. Some adopted a ‘flycatcher’ hunting style at this time. They still avoided flying conspecifics.

  4. 4.

    The final phase of development began at about days 24–27 and may last 2 weeks or more. It involved virtually continual flight, insect pursuits, and maneuvers that became indistinguishable from those of adults, and also gradual integration with the adults during emergence, flight along traditional routes, and foraging.

  5. 5.

    The echolocation sounds of young of known and estimated relative ages were recorded in the field, a flight cage, or large room. Again, development was rapid. Landing buzzes always occurred, even in the first flight, although the progressive changes in frequency were sometimes not as uniform as in adults.

  6. 6.

    The pulses during all phases of early flight were of lower frequency than in adults. Those emitted during cruise and approach phases were frequently paired. There is possible ontogenetic and phylogenetic significance to this pairing. Within a few days, the pairing disappeared and within ca. 1 week all echolocation parameters became similar to those of adults (Fig. 1; Table 2).



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  1. Anthony, E.L.P., Kunz, T.H.: Feeding strategies of the little brown bat,Myotis lucifugus, in southern New Hampshire. Ecology58, 775–786 (1977)Google Scholar
  2. Belwood, J.J., Fenton, M.B.: Variation in the diet ofMyotis lucifugus (Chiroptera: Vespertilionidae). Can. J. Zool.54, 1674–1678 (1976)Google Scholar
  3. Black, H.L.: Differential exploitation of moths by the batsEptesicus fuscus andLasiurus cinereus. J. Mammal.53, 598–601 (1972)Google Scholar
  4. Brown, P.E.: Vocal communication in the pallid bat,Antrozous pallidus. Z. Tierpsychol.41, 34–54 (1976)Google Scholar
  5. Brown, P.E., Grinnell, A.D., Harrison, J.B.: The development of hearing in the pallid bat,Antrozous pallidus. J. Comp. Physiol.126, 169–182 (1978)Google Scholar
  6. Buchler, E.R.: A chemiluminescent tag for tracking bats and other small nocturnal animals. J. Mammal.57, 173–176 (1976a)Google Scholar
  7. Buchler, E.R.: The use of echolocation by the wandering shrew,Sorex vagrans. Anim. Behav.24, 858–873 (1976b)Google Scholar
  8. Buchler, E.R.: Prey selection inMyotis lucifugus (Chiroptera: Vespertilionidae). Am. Nat.110, 619–628 (1976c)Google Scholar
  9. Buchler, E.R.: Similarities in design features of orientation sounds used by simpler nonaquatic echolocators. In: Proc. II animal sonar systems symposium. Busnel, R.G. (ed.). New York: Plenum (in press) 1979Google Scholar
  10. Fenton, M.B., Morris, G.K.: Opportunistic feeding by desert bats (Myotis spp.). Can. J. Zool.54, 526–530 (1976)Google Scholar
  11. Gould, E.: Evidence for echolocation in the Tenrecidae of Madagascar. Proc. Am. Philos. Soc.109, 352–360 (1965)Google Scholar
  12. Gould, E.: Studies of maternal-infant communication and development of vocalizations in the batsMyotis andEptesicus. Commun. Behav. Biol.5, 263–313 (1971)Google Scholar
  13. Gould, E.: Neonatal vocalizations in bats of eight genera. J. Mammal.56, 15–29 (1975)Google Scholar
  14. Gould, E., Woolf, N.K., Turner, D.C.: Double-note communication calls in bats: Occurrence in three families. J. Mammal.54, 998–1001 (1973)Google Scholar
  15. Griffin, D.R.: Migrations of New England bats. Bull. Mus. Comp. Zool. Harv. Univ.86, 217–246 (1940)Google Scholar
  16. Griffin, D.R.: Audible and ultrasonic sounds of bats. Experientia7, 448–453 (1951)Google Scholar
  17. Hopkins, C.D., Rossetto, M., Lutjen, A.: A continuous sound spectrum analyser for animal sounds. Z. Tierpsychol.34, 313–320 (1974)Google Scholar
  18. Jones, C.: Growth, development and wing loading in the evening bat,Nycticeius humeralis (Rafinesque). J. Mammal.48, 1–19 (1967)Google Scholar
  19. Kleiman, D.G.: Maternal care, growth rate and development in the noctule (Nyctalus noctula), pipistrelle (Pipistrellus pipistrellus) and serotine (Eptesicus serotinus). J. Zool.157, 187–211 (1969)Google Scholar
  20. Konstantinov, A.I.: Development of echolocation in bats in postnatal ontogenesis. Period. Biol.75, 13–19 (1973)Google Scholar
  21. Kunz, T.H.: Population studies of the cave bat (Myotis velifer): Reproduction, growth and development. Occas. Pap. Mus. Nat. Hist. Univ. Kans.15, 1–43 (1973)Google Scholar
  22. Kunz, T.H.: Reproduction, growth and mortality of the vespertilionid bat,Eptesicus fuscus, in Kansas. Ecology55, 1–113 (1974a)Google Scholar
  23. Kunz, T.H.: Feeding ecology of a temperate insectivorous bat (Myotis velifer). Ecology55, 693–711 (1974b)Google Scholar
  24. Kunz, T.H., Anthony, E.L.P., Rumage, W.T., III: Mortality ofLasiurus borealis borealis following multiple pesticide applications. J. Wildl. Manag.41, 476–483 (1977)Google Scholar
  25. McCue, J.J.G., Bertolini, A.: A portable receiver for ultrasonic waves in the air. IEEE Trans. Sonics Ultrason. GroupSU-11 41–49 (1964)Google Scholar
  26. Medway, L., Pye, J.D.: Echolocation and the systematics of swiftlets. In: Evolutionary ecology. Stonehouse, B., Perrins, C. (eds.), pp. 225–238. Baltimore: University Park 1977Google Scholar
  27. O'Farrell, M.J., Studier, E.H.: Reproduction, growth and development inMyotis thysanodes andM. lucifugus (Chiroptera: Vespertilionidae). Ecology54, 18–30 (1973)Google Scholar
  28. Orr, R.: Natural history of the pallid bat,Antrozous pallidus (Le Conte). Proc. Calif. Acad. Sci.28, 165–246 (1954)Google Scholar
  29. O'Shea, T.J., Vaughan, T.A.: Nocturnal and seasonal activities of the pallid bat,Antrozous pallidus. J. Mammal.58, 269–284 (1977)Google Scholar
  30. Pearson, O.M., Koford, M., Pearson, A.: Reproduction of the lump-nosed bat (Corynorhinus rafinesquei) in California. J. Mammal.33, 273–320 (1952)Google Scholar
  31. Ross, A.: Ecological aspects of the food habits of insectivorous bats. Proc. West. Found. Vertebr. Zool.1, 205–263 (1967)Google Scholar
  32. Sales, G., Pye, J.D.: Ultrasonic communication by animals. New York: Halstead 1974Google Scholar
  33. Sazima, I.: Vertebrates as food items of the woolly false vampire,Chrotopterus auritus. J. Mammal.59, 617–618 (1978)Google Scholar
  34. Thomas, S.P., Suthers, R.A.: The physiology and energetics of bat flight. J. Exp. Biol.57, 317–335 (1972)Google Scholar
  35. Vaughan, T.A.: Nocturnal behavior of the African false vampire bat (Cardioderma cor). J. Mammal.57, 227–248 (1976)Google Scholar
  36. Vaughan, T.A.: Foraging behavior of the giant leaf-nosed bat (Hipposideros commersoni). E. Afr. Wild. J.15, 237–249 (1977)Google Scholar
  37. Whitaker, J.O., Jr.: Food habits of bats from Indiana. Can. J. Zool.50, 877–883 (1972)Google Scholar
  38. Woolf, N.K.: The ontogeny of bat sonar sounds: With special emphasis on sensory deprivation. Unpublished Sc. D. thesis, Johns Hopkins University, Baltimore (1974)Google Scholar

Copyright information

© Springer-Verlag 1980

Authors and Affiliations

  • Edward R. Buchler
    • 1
  1. 1.Department of ZoologyUniversity of MarylandCollege ParkUSA

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