Many of you have probably already seen the pop press reports on Carel van Schaik's work on orangutan's, including their use of tools, but it continues to fascinate me because of what it suggests about both the environmental impact on the behaviors we see in contemporary populations, and the implications of his work for the evolution of intelligence in the great apes.
Here's a
brief article prompted by the release of his new book, "Among Orangutans: Red Apes and the Rise of Human Culture."
As the article notes, orangutans were previously seen as "the only great ape that lived a largely solitary life foraging for hard-to-find fruit thinly distributed over a large area."
But the orangutans van Schaik found in Suaq turned all that on its head. More than 100 were gathered together doing things the researchers had never seen in the wild.
The implication is that the orangutan we thought we knew is a product of habitat loss and diminished population density--their bare subsistence, tool-less lifestyle caused by the loss of rich habitat, not their innate intelligence or capacity for culture.
The larger, more socially tolerant, tool-using population he discovered rescues the red ape somewhat from our flawed understanding.
Welcome home, Orang.