Symphalangus syndactylus (Siamang)

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"Fire, demography and the persistence of siamang (Symphalangus syndactylus: Hylobatidae) in a Sumatran rainforest." Animal Conservation, vol. 6, no. 2, 28 Feb. 2006, doi.org/10.1017/S1367943003003159. Accessed 9 Aug. 2018. Fischer, J.O., & Geissmann, T., (1990). Group harmony in gibbons: Comparison between white-handed gibbon (Hylobates lar) and siamang (H. syndactylus). Primates, 31.4:481-494. DOI: 10.1007/BF02382532

Alberts, S., (1987). Parental care in captive siamangs (Hylobates syndactylus). Zoo Biology, 6.4. DOI: 10.1002/zoo.1430060414

Haraway, M.M., Maples, E.G., Tolson, S., (1981). Taped vocalization as a reinforcer of vocal behavior in a siamang gibbon (Symphalangus syndactylus). Psychological Reports. DOI: 10.2466/pr0.1981.49.3.995

Liebal, K., & Kaminski, J., (2012). Gibbons (Hylobates pileatus, H. moloch, H. lar, Symphalangus syndactylus) follow human gaze, but do not take the visual perspective of others. Animal Cognition, 15.6: 1211-1216. DOI: 10.1007/s10071-012-0543-5

Orgeldinger, M., (1997). Protective and territorial behavior in captive siamangs (Hylobates syndactylus). Zoo Biology, 16.4. DOI: 10.1002/(SICI)1098-2361(1997)16:4<309::AID-ZOO3>3.0.CO;2-E

Palombit, R.A., (1995). Longitudinal patterns of reproduction in wild female siamang (Hylobates syndactylus) and white-handed gibbons (Hylobates lar). International Journal of Primatology, 16.5:739-760. DOI: 10.1007/BF02735718

Smith, K.N., & Kuhar, C.W., (2010). Siamangs (Hylobates syndactylus) and white-cheeked gibbons (Hylobates leucogenys) show few behavioral differences related to zoo attendance. Journal of Applied Animal Welfare Science, 2:154-163. DOI: 10.1080/10888700903579895

Geissmann, T., (1991). Reassessment of age of sexual maturity in gibbons (hylobates ssp.). American Journal of Primatology, 23.1. DOI: 10.1002/ajp.1350230103.

Morino, L., et al. (2017). Tube task hand preference in captive hylobatids. Primates, 58.3:403-412. DOI: 10.1007/s10329-017-0605-z