Fig 1
Fig 2
Fig 3
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Order : PRIMATES
Family : Hylobatidae
Species : Hylobates funereus
Head-body length : ~42-47 cm
Tail length : no tail
Weight : ~5-6.4 kg
The East Bornean Grey
Gibbon
Hylobates funereus is one of four species of gibbon inhabiting the island
of Borneo. The
species is confined to tall primary rainforest in
lowland and lower montane areas of north and northeast Borneo and East
Kalimantan.
Gibbons are exclusively arboreal, and do not descend to the ground unless. They may continue to survive in forests affected by logging, as long as
sufficient tall trees survive in close proximity to allow ease of movement
from one tree to the next. In practice, most logged areas support few or no
gibbons.
Gibbons occur in small family groups generally comprising a male, female and
their young. The whooping call of adult gibbons early in the morning is,
perhaps, the most iconic sound of Borneo's rainforest.
Fur colour of the East Bornean Grey Gibbon is typically grey-brown, though this can
vary greatly. The brow is pale cream to white.
Pictured here is a typical example of the species from Sabah.
Figs 1 and 3 : An East Bornean Grey
Gibbon feeds on small fruits
and young leaves in the early morning sun at Danum Valley, Sabah,
Borneo.
Fig 2 : Lowland primary rainforest at Danum Valley, Sabah, Borneo.
References :
Payne, J., Francis, C.M., 1998. A Field Guide to the Mammals of
Borneo. The Sabah Society.
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