Ficus callophylla  is an uncommon forest hemi-epiphytic strangler  with a wide distribution  from Thailand  to Java and Sulawesi. In Borneo F. callophylla  is probably a relic of a dryer climate in the past – hence the rarity.

All photos were taken by Martyn Sidwell  of a binturong feeding  in a fruiting Ficus callophylla  at Deramakot Forest Reserve, Sabah in May 2017.

Callophylla 02
Binturongs are fig specialists which prefer to eat figs above all other fruits. Research by Miyabi Nakabayashi found that they eat all types of figs  including bat figs that ripen green  but are most often seen in fruiting strangling figs where they  feed night and day until the crop is exhausted. A typical strangling fig crop may last  from one to 3 weeks. In between feeding bouts, Binturongs typically rest by lying along a branch with legs hanging down as shown in the photo above.
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Ficus callophylla can be distinguished by the relatively large plain leaves  with relatively small figs that ripen white to pink to dark red/purple .  The small  figs are relatively flat i.e. pumpkin shaped rather than egg shaped. In comparison Ficus delosyce has  small egg shaped figs that also ripen white to pink. The leaves are also much smaller than F. callophylla.

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