Robin Chittenden / Siamang Gibbon (Symphalangus syndactylus) Thrigby Hall zoo, Norfolk, England, UK, November.
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Konrad Wothe / Siamang (Symphalangus syndactylus) mother calling in tree with baby, native to southeast Asia
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Thomas Marent / Siamang (Symphalangus syndactylus) hanging in tree, Singapore Zoo, Singapore
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Thomas Marent / Siamang (Symphalangus syndactylus) hanging in tree, Singapore Zoo, Singapore
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Andrew Walmsley / Male Siamang gibbon (hylobates / Symphalangus syndactylus) vocalising, with throat pouch extended, Captive, New Zealand, Endangered species
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Andrew Walmsley / Male Siamang gibbon (hylobates / Symphalangus syndactylus) vocalising, with throat pouch extended, Captive, New Zealand, Endangered species
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Andrew Walmsley / Pair of Siamang gibbon (Hylobates / Symphalangus syndactylus) vocalising together, note the male's extended throat pouch, Captive, New Zealand, endangered species
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Thomas Marent / Siamang (Symphalangus syndactylus) in rainforest canopy, Sumatra, Indonesia
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Thomas Marent / Siamang (Symphalangus syndactylus) hanging in rainforest tree, Sumatra, Indonesia
