Orangutan Bornean and Sumatra


orangutan borneo

The two species of orangutan, Bornean and Sumatran, differ slightly in appearance and behavior. While both have shaggy reddish fur, Sumatran orangutans have longer facial hair and seem to have closer social bonds than their Bornean cousins. Bornean orangutans are more likely to descend from trees on occasion and move around on the ground.

orangutan borneo
Orangutans' arms are well suited to their lifestyle because they spend much of their time (some 90 percent) in the trees of their tropical rain forest home. They even sleep aloft in nests of leafy branches. They use large leaves as umbrellas and shelters to protect themselves from the common rains.
 
These cerebral primates forage for food during daylight hours. Most of their diet consists of fruit and leaves gathered from rain forest trees. They also eat bark, insects and, on rare occasions, meat.
 
The two species of orangutan, Bornean and Sumatran, differ a little in appearance and behavior. While both have shaggy reddish fur, Sumatran orangutans have longer facial hair. Sumatran orangutans are reported to have closer social bonds than their Bornean cousins. Bornean orangutans are more likely to descend from the trees to move around on the ground. Both species have experienced sharp population declines.
orangutan sumatra
A century ago there were probably more than 230,000 orangutans in total, but the Bornean orangutan is now estimated to number about 45,000-69,000 (Endangered) and the Sumatran about 7,500 (Critically Endangered).

orangutan sumatra
Because orangutans live in only a few places, and because they are so dependent upon trees, they are particularly susceptible to logging in these areas. Unfortunately, deforestation and other human activities, such as hunting, have placed the orangutan in danger of extinction.

Source :
http://www.nationalgeographic.com/
http://www.worldwildlife.org/

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