* Fruits: Orangutans are frugivores, meaning they primarily eat fruits. They consume a wide variety of fruits, including figs, durians, lychees, mangosteens, and rambutans.
* Leaves: Leaves make up a significant portion of their diet, and they are consumed on a regular basis. Orangutans prefer young leaves, which are more tender and nutritious.
* Insects: Orangutans also eat insects, such as ants, termites, beetles, and caterpillars. They may use sticks or tools to extract insects from their hiding places or bark.
* Flowers: Orangutans occasionally feed on flowers, especially when fruits are scarce.
* Seeds: They consume seeds from various fruits, such as dipterocarps, rambutan, and durian.
* Bark: In times of limited food availability, orangutans might eat tree bark as a source of fiber.
* Soil: Orangutans sometimes ingest soil, which is thought to help them neutralize stomach acids and obtain minerals.
* Birds' eggs and small vertebrates: Orangutans rarely consume these items but may do so opportunistically.
Orangutans are generally considered opportunistic foragers, adapting their diet based on what's available in their environment. They also display individual preferences and variations in their diets depending on their location and social group.