3 DAYS WITH MANGGO AND MELKI

The Post-Release Monitoring (PRM) team once again recorded interesting observations of orangutans living freely in the Bukit Batikap Protected Forest of Central Kalimantan. This time, the monitoring focused on a mother orangutan named Manggo and her offspring, Melki, who were observed for three consecutive days around the main transect.

First Encounter in a Sangkuang Tree
When first spotted, both Manggo and Melki were feeding in a sangkuang tree. The team immediately began observations and continued until the pair built their night nest.

On the first day, Manggo’s activities were dominated by feeding, mainly on sangkuang fruit and young lunuk leaves. Melki followed closely and was observed feeding alongside its mother several times.

The close interaction between mother and offspring during feeding is an essential part of young orangutan development, as the infant learns how to identify food sources, how to eat, and how to select appropriate foods from its mother.

Nest-to-Nest Observation and Food Variety
Observations continued the next day using the nest-to-nest method, from when Manggo and Melki left their morning nest until they built their night nest.

Throughout the day, Manggo’s activities were again dominated by feeding. The food items consumed included sangkuang fruit, hampaning fruit, umbut (palm shoots), and termites. Melki was observed feeding alongside its mother several times, demonstrating the natural learning process of observation and imitation.

During the observations, Manggo’s activities were primarily focused on feeding.

On the third day, nest-to-nest observation was conducted again. Manggo’s activities remained dominated by feeding, with food sources including sangkuang and banuang fruit, as well as young lunuk leaves.

Melki stayed close to its mother throughout the observation and was again observed feeding alongside Manggo.

Condition of Manggo and Melki
During the three days of observation, both Manggo and Melki appeared healthy and active, as shown by their consistent feeding and daily activities.

Their last recorded night nest was located near the main transect, at a nest height of approximately 16–20 meters above the ground. The nest was classified as type A, with a diameter of approximately 1–1.5 meters, built in a tree approximately 21–25 meters tall. Melki was still sleeping in the same nest as its mother, indicating that the young orangutan remains highly dependent.

Why Monitoring Mother and Infant Orangutans Is Important
Observations of mother and infant orangutans like Manggo and Melki provide important information about daily activity patterns, diet, infant learning processes, and the health of individuals in the wild.

These monitoring activities also help the team understand how orangutans adapt to their habitat and ensure that monitored individuals remain healthy and capable of surviving independently in the forest.

The story of Manggo and Melki reminds us that deep within the Bukit Batikap forest, the cycle of orangutan life continues, from mothers searching for food to infants learning how to survive in the forest that will one day become their home.

Protecting the forest means ensuring that stories like Manggo and Melki can continue for generations to come.

How Can You Help

There are lots of ways you can support orangutans and help ensure the survival of this precious ape.

Adopt an Orangutan

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Orangutans are endangered and at risk of extinction. Habitat destruction results in hundreds of orphaned orangutans, who rely on our care every year. You can help by adopting one. Their dedicated ‘nannies’ teach them everything they need to know for when it’s time to release them back to the wild. You can follow their progress on Orangutan Jungle School available to stream on YouTube

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Please help the Orangutans in their struggle for survival. Your donation is important and goes directly to BOS Indonesia. By donating, you are helping bring this noble yet endangered species back from the brink of extinction and on a path to freedom - from rescue to rehabilitation and release.

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