Whitehead H, Waters S, Lyrholm T (1991) Social organization of female sperm
whales and their offspring: Constant companions and casual acquaintances. Behav
Ecol Sociobiol 29:385–389.
Wiens JA (1982) Song pattern variation in the sage sparrow (Amphispiza belli):
Dialects or epiphenomena. Auk 99:208–229.
Wiley RH (1971) Song groups in a singing assembly of little hermits. Condor
73:28–35.
Wiley RH, Richards DG (1982) Adaptations for acoustic communication in birds:
Sound transmission and signal detection. In: Kroodsma DE, Miller EH, Ouellet
H (eds) Acoustic Communication in Birds. New York: Academic Press, pp.
132–182.
Wilkinson GS, Boughman JW (1998) Social calls coordinate foraging in greater
spear-nosed bats. Anim Behav 55:337–350.
Wilkinson GS, Boughman JW (1999) Social influences on foraging in bats. In: Box
HO, Gibson K (eds) Mammalian Social Learning: Comparative and Ecological
Perspectives. Cambridge, UK: Cambridge University Press, pp. 188–204.
Winn HE, Thompson TJ, Cummings WC, Hain J, Hudnall J, Hays H, Steiner WW
(1981) Song of the humpback whale—population comparisons. Behav Ecol Sociobiol 8:41–46.
Winter P, Handley P, Ploog D, Schott D (1973) Ontogeny of squirrel monkey calls
under normal conditions and under acoustic isolation. Behaviour 47:231–239.
Wright TF (1996) Regional dialects in the contact call of a parrot. Proc R Soc Lond
B Biol Sci 263:867–872.
Wright TF (1997) Vocal communication in the yellow-naped amazon (Amazona
auropalliata). Ph.D. Thesis, University of California, San Diego, CA.
Wright TF, Dorin M (2001) Pair duets in the yellow-naped Amazon (Psittaciformes:
Amazona auropalliata): Responses to playbacks of different dialects. Ethology
107:111–124.
Wright TF, Wilkinson GS (2001) Population genetic structure and vocal dialects in
an amazon parrot. Proc R Soc Lond B Biol Sci 268:609–616.
Wyndham E (1980a) Diurnal cycle, behavior and social organization in the budgerigar (Melopsittacus undulatus). Emu 80:25–33.
Wyndham E (1980b) Environment and food of the budgerigar (Melopsittacus undulatus). Aust J Ecol 5:47–61.
Zann R (1984) Structural variation in the zebra finch distance call. Z Tierpsychol
66:328–345.
Zann R (1985) Ontogeny of the zebra finch distance call: I. Effects of cross fostering to Bengalese finches. Z Tierpsychol 68:1–23.
Zann R (1990) Song and call learning in wild zebra finches in south-east Australia.
Anim Behav 40:811–828.
Zimmermann E (1995) Loud calls in nocturnal prosimians: Structure, evolution and
ontogeny. In: Zimmermann E, Newman JD, Jurgens U (eds) Current Topics in
Primate Vocal Communication. New York, Plenum Press. pp. 47–72.
Zimmermann E, Lerch C (1993) The complex acoustic design of an advertisement
call in male mouse lemurs (Microcebus murinus, Prosimii, Primates) and sources
of its variation. Ethology 93:211–224.
224
J.W. Boughman and C.F. Moss
whales and their offspring: Constant companions and casual acquaintances. Behav
Ecol Sociobiol 29:385–389.
Wiens JA (1982) Song pattern variation in the sage sparrow (Amphispiza belli):
Dialects or epiphenomena. Auk 99:208–229.
Wiley RH (1971) Song groups in a singing assembly of little hermits. Condor
73:28–35.
Wiley RH, Richards DG (1982) Adaptations for acoustic communication in birds:
Sound transmission and signal detection. In: Kroodsma DE, Miller EH, Ouellet
H (eds) Acoustic Communication in Birds. New York: Academic Press, pp.
132–182.
Wilkinson GS, Boughman JW (1998) Social calls coordinate foraging in greater
spear-nosed bats. Anim Behav 55:337–350.
Wilkinson GS, Boughman JW (1999) Social influences on foraging in bats. In: Box
HO, Gibson K (eds) Mammalian Social Learning: Comparative and Ecological
Perspectives. Cambridge, UK: Cambridge University Press, pp. 188–204.
Winn HE, Thompson TJ, Cummings WC, Hain J, Hudnall J, Hays H, Steiner WW
(1981) Song of the humpback whale—population comparisons. Behav Ecol Sociobiol 8:41–46.
Winter P, Handley P, Ploog D, Schott D (1973) Ontogeny of squirrel monkey calls
under normal conditions and under acoustic isolation. Behaviour 47:231–239.
Wright TF (1996) Regional dialects in the contact call of a parrot. Proc R Soc Lond
B Biol Sci 263:867–872.
Wright TF (1997) Vocal communication in the yellow-naped amazon (Amazona
auropalliata). Ph.D. Thesis, University of California, San Diego, CA.
Wright TF, Dorin M (2001) Pair duets in the yellow-naped Amazon (Psittaciformes:
Amazona auropalliata): Responses to playbacks of different dialects. Ethology
107:111–124.
Wright TF, Wilkinson GS (2001) Population genetic structure and vocal dialects in
an amazon parrot. Proc R Soc Lond B Biol Sci 268:609–616.
Wyndham E (1980a) Diurnal cycle, behavior and social organization in the budgerigar (Melopsittacus undulatus). Emu 80:25–33.
Wyndham E (1980b) Environment and food of the budgerigar (Melopsittacus undulatus). Aust J Ecol 5:47–61.
Zann R (1984) Structural variation in the zebra finch distance call. Z Tierpsychol
66:328–345.
Zann R (1985) Ontogeny of the zebra finch distance call: I. Effects of cross fostering to Bengalese finches. Z Tierpsychol 68:1–23.
Zann R (1990) Song and call learning in wild zebra finches in south-east Australia.
Anim Behav 40:811–828.
Zimmermann E (1995) Loud calls in nocturnal prosimians: Structure, evolution and
ontogeny. In: Zimmermann E, Newman JD, Jurgens U (eds) Current Topics in
Primate Vocal Communication. New York, Plenum Press. pp. 47–72.
Zimmermann E, Lerch C (1993) The complex acoustic design of an advertisement
call in male mouse lemurs (Microcebus murinus, Prosimii, Primates) and sources
of its variation. Ethology 93:211–224.
224
J.W. Boughman and C.F. Moss