Perception that orangutan are forest inhabitants living in isolated
existence may be an accurate geographic portrayal, but overlooks noncontiguous
interactions. While population density appears resource dependent, it takes acommunity to “raise” an orang. Their development of intricate communication
techniques reflects the importance of community.
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| Orang-utan |
Clicks and “faux speech” represent arousal and
alarm calls, in the form of grumphs, gorkunes, grumbiass. Sophisticated
kiss-squeak alarm calls involving cupping hands around muzzles to reduce pitch,
facilitating long-distance sound transmission. This is not inherited, but
learned behavior, reflecting aprolonged childhood. So-called locomotor
independence is delayed at least five years. This is a period of intense (at
least related to later activity levels) learning. They are very curious animals,
for whom communication is only a part of their “curriculum.” One of the more
intriguing aspects of orang behavior is their use of tools. Variability among
derived family groups, at least during the five year “home life” confirms this
as learned, not hereditary behavior. Their curiosity often leads to discovering
new tools and concepts which they share with their group. This includes
building sun covers out of leaves and play nests. Hygiene is facilitated by
creating leaf napkins. Read more>>>>>>>
