Sumatran Orangutan
scientific name
Pongo pygmaeus abelii
size/weight/height
Weight: male 130 - 200 lbs. " female 90 - 120 lbs.
Height: male 4.5 - 5' " female 3'8"
males much larger than females (sexual dimorphism)
adaptations/coloration
Color: fur shaggy red " male face flanges dark
Feet: similar to hands " used for grasping
Arms: long
Brain: large " highly intelligent
Laryngeal Sacs: large " used for long-distance calls
Posture: erect for brachiation
behavior
diurnal " arboreal (old males mostly ground-living)
Face Flaps: male use in dominance display
Personality: alone except when mating or mother with young " solitary due to dispersion of food resources
Nests: built for sleeping
reproduction/lifespan
Lifespan: wild 35 yrs " captivity 50 yrs
Birth Interval: 7-8 yrs
Gestation: 233-265 days
Young: 1 " twins rare " nurse maximum 3 yrs
diet
Wild: eggs, fruit, insects, leaves, small invertebrates & young shoots
Zoo: Monkey Chow, fruits & vegetables
habitat/range
lowland " hilly tropical rain forest " Southeast Asia (Borneo & Sumatra)
status
U.S. Endangered " CITES App I " due to habitat destruction " SSP " studbook participant " Great Ape TAG
note
two distinct sub-species - Bornean & Sumatran; we have Sumatran " The two sub-species are genetically quite different & managed (bred) separately
oregon zoo exhibit