Get to Know: The Yaderu (Bale Mountains Vervet, Ethiopia)

The Yaderu ("Devoted" in Amheric), is the fierce protector of her troop of adventurers. She is based on the Bale Mountains vervet monkey that can only be found in Ethiopia. I think we all fell in love with the image of this small, loyal monkey being best friends with the fearsome-looking Philippines Eagle. So we made it happen. In our world, the Yaderu and the Babaylan are best friends!

Imagine a monkey that lives high up in the foggy bamboo forests of the Ethiopian highlands. Meet the Bale Mountains vervet monkey, known scientifically as Chlorocebus djamdjamensis. These unique primates are well-adapted to their cold, mountainous environment. They possess thick, grizzled brown fur coats to keep them warm in the high altitudes. They also have distinct facial features, including a prominent white mustache and a white beard. Adult males feature a striking patch of bright blue skin on their undersides, making them easily recognizable to researchers studying them in the wild.

Unlike many other monkey species that eat a wide variety of foods, the Bale monkey is a dietary specialist. This means they rely almost entirely on one specific plant for survival: African alpine bamboo. Studies show that young bamboo leaves and shoots make up 77% to 81% of their annual diet. Because they depend so heavily on this single plant, they are quite similar to giant pandas and koalas. To help them gather food efficiently, they have special cheek pouches that allow them to carry extra bamboo pieces while they travel through the forest. They are also known for being very shy, often retreating deep into the forest canopy when humans approach.

Bale Mountains vervet monkeys are social animals that live together in groups called troops. These troops can range in size from 10 to 60 individuals. Within these groups, young monkeys learn essential survival skills by playing, climbing, and wrestling with one another in the trees. Adults spend a significant amount of time grooming each other, which helps strengthen social bonds and keeps their fur clean. Unfortunately, because human activities are causing their bamboo forests to shrink, these monkeys are currently classified as a vulnerable species. Scientists and conservationists are working hard to protect their habitat so these unique primates can survive for the future.

References

• Animalia. "Bale Mountains Vervet - Facts, Diet, and Habitat." Animalia Species Guide.

• Britannica. "Vervet Primate Behavior and Physical Features." Encyclopedia Britannica.

• Kiddle Encyclopedia. "Bale Mountains Vervet Facts for Kids." Kiddle Kids Search.

• New England Primate Conservancy. "Bale Monkey (Chlorocebus djamdjamensis) Profile." NEPC Primate Conservation.

• San Diego Zoo Wildlife Alliance. "Vervet Monkey Overview and Identification." San Diego Zoo Animals.