Sean Crane / Celebes Black Macaque (Macaca nigra) scratching head, Tangkoko Nature Reserve, Sulawesi, Indonesia
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Paul Williams / Spectral tarsier (Tarsius tarsier) returning to sleep in fig tree after a night hunting, Tangkoko, Sulawesi, Indonesia.
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Juergen Freund / Spectral Tarsier (Tarsius tarsier) feeding on preying mantis in strangler fig tree, Tangkoko National Park, North Sulawesi, Indonesia
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Juergen Freund / Spectral Tarsier (Tarsius tarsier) jumping on a grasshopper, Tangkoko National Park, North Sulawesi, Indonesia
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Anup Shah / Celebes / Black crested macaque (Macaca nigra) sub-adult male yawning, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) sub-adult male head portrait, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) mature male head and shoulders portrait, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) sub-adult male head portrait, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) baby less than 1 month old in mothers arms, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) female head and shoulders standing portrait, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) two individuals greeting, Tangkoko National Park, Sulawesi, Indonesia.
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Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) female with suckling infant aged 9-12 months, Tangkoko National Park, Sulawesi, Indonesia.
