leaf iconFeature: Kenya

A Tale of 3 Caves

A Tale of 3 Caves typography
Community-driven conservation in Kenya strives to protect an Endangered species
By Stefanie Waldek
Stakeholders meet by Makuruhu Cave in Kenya.
Photo: Karel de la Cruz Victoria
Community-driven conservation in Kenya strives to protect an Endangered species
By Stefanie Waldek
F

orget the Big Five animals safari-goers seek out, like lions and elephants. It’s all about bats in coastal Kenya—or at least it should be. All along Kenya’s Indian Ocean shoreline are coral caves that bats love to use as roosting sites. Their numbers are so high they comprise up to 27% of Kenya’s mammals. But as it goes with many ecosystems around the world, habitat loss threatens the resident species, including the Endangered Hildegarde’s tomb bat (Taphozous hildegardeae).

closeup face shot of endangered Hildegarde’s tomb bat
Endangered Hildegarde’s tomb bat (Taphozous hildegardeae)
Photo: Karel de la Cruz Victoria
Since 2022, Bat Conservation International (BCI) has been working with local bat experts, including conservation biologist David Wechuli, Ph.D., BCI’s Kenya Program Manager, and Paul Webala, Ph.D., senior lecturer in wildlife biology at Maasai Mara University in Narok, Kenya, to protect three cave sites in coastal Kenya: The Tswaka Giant Three Sisters cave system in the south, and the Kaboga and Makuruhu caves in the north.

“The three caves that we’re working on have about 70% of the Kenyan Hildegarde’s tomb bat population in them,” says Isabella Mandl, Ph.D., Regional Director, Africa and South Asia. While Hildegarde’s tomb bat can also be found in coastal Tanzania—the species is endemic to the region—very little is known about that population. That’s why protecting the colonies we know about in Kenya is crucial.

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Around 70% of Kenya’s Endangered Hildegarde’s tomb bat population lives in these three caves.
While all three cave sites face habitat loss, there are two different reasons. At Makuruhu and Three Sisters, deforestation is a major problem. At Kaboga, urban development is encroaching upon the cave. “So, we have to find solutions for the same setup but in completely different contexts, which makes this project very interesting,” Mandl says.
David Wechuli inside Makuruhu Cave
David Wechuli inside Makuruhu Cave
Photo: Karel de la Cruz Victoria

Habitat loss from deforestation and development

Webala started working with the bat colonies in Kenya’s coastal caves in 2012. “At the beginning, there were a lot of forests around those caves, and human activity was very minimal,” he says. “Today, the forests are gone. They’ve been cleared.” As insectivorous bats, the Hildegarde’s tomb bats forage in forests and woodlands—without trees and shrubs, they’re losing their feeding grounds.

At Makuruhu and Three Sisters, this deforestation is largely due to the local communities, who are not acting maliciously, but seeking a way to survive off the land. “At Three Sisters, for instance, the community has been clearing the forests to grow subsistence crops like corn. And they have a lot of deforestation because they require firewood and timber for building and furniture,” Mandl says. A secondary issue derived from agricultural deforestation is guano harvesting. Since guano is an effective fertilizer, the communities have been entering the caves—thus disturbing the bats—to collect it for their crops.

“If Bat Conservation International didn’t buy the land, the likely scenario would have been that the cave was destroyed. That would have been an extreme disaster.”
—Paul Webala
Hildegarde’s tomb bat mid-flight
Hildegarde’s tomb bat (Taphozous hildegardeae) in flight.
Photo: Karel de la Cruz Victoria
aerial view of Makuruhu Cave
An aerial image depicting where Makuruhu Cave is located.
Photo: Karel de la Cruz Victoria
At Kaboga, however, the habitat loss is due to development. “The entire coastline is incredibly touristic with people coming for the beach. There’s a lot of tourism development happening, especially in the north, close to the city of Watamu,” Mandl says.

Unfortunately, that’s where you’ll find Kaboga. While the cave was once on private land, the property has been subdivided and sold to private developers, many of whom are building hotels.

Kenyan cave conservation nonprofit workers smiling for group photo
The purchase of Kaboga Cave was finalized in 2024.
Photo: Karel de la Cruz Victoria

All about Angaza Vijiji

Nonprofit works on Kenyan cave conservation
Founded by Evarastus Obura, who now serves as the organization’s CEO, Angaza Vijiji is a Kenyan social enterprise that develops and promotes sustainable practices among underserved rural communities. The nonprofit’s projects include promoting nature-based enterprise, food and nutrition security, advocating for sustainable tourism, and mentoring future conservation leaders, as well as encouraging young people to learn about sustainable development.

The organization initially focused on promoting biodiversity conservation education among schools and communities in western Kenya, but Obura’s encounter with Paul Webala, Ph.D., at a conference sparked a years-long collaboration focusing on bat conservation. Now, Angaza Vijiji is working with BCI to manage and protect the Kaboga Cave near Watamu.

“We work with communities to promote participatory learning and action for sustainable conservation of threatened bats through education and empowerment,” Obura says. “We build local capacity to enhance action for long-term conservation of bats and other biodiversity at the local level. This helps to establish pathways for sustainable conservation of bats through livelihood and conservation approaches. It’s more than just introducing them to Endangered species. We look at it holistically. How do we break down the science? It’s also critical for us to seriously consider the opportunity for enterprise. These bats can create opportunities for livelihoods.”

While the cave was once on private land, the property has been subdivided and sold to private developers, many of whom are building hotels.
BCI team exploring Kaboga Cave in coastal Kenya
The BCI team exploring Kaboga Cave in coastal Kenya.
Photo: Karel de la Cruz Victoria
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Because the development happened so rapidly, BCI needed to move quickly to protect Kaboga; the organization purchased the parcel of land surrounding the cave.
Because the development happened so rapidly, BCI needed to move quickly to protect Kaboga; the organization purchased the parcel of land surrounding the cave. For this project, BCI partnered with Kenyan nonprofit Angaza Vijiji. This social enterprise works to develop sustainable practices in rural communities, which will co-manage the land with the community.

“If BCI didn’t buy the land, the likely scenario would have been that the cave was destroyed. That would have been an extreme disaster,” Webala says. But while the cave might be protected, the surrounding foraging grounds are quickly disappearing, so the bats are still at risk.

BCI team smiling for group photo in front of tree in coastal Kenya
The BCI team meets with local partners in coastal Kenya.
Photo: Karel de la Cruz Victoria

Involving the community

“There’s a lot of mystery and folklore about the bats, but if the community understood the significance of those caves and the roles bats play in the ecosystem, maybe they wouldn’t be destroying the vegetation where the bats could flourish,” Webala says.

At Makuruhu, the local community has been open to bat education. “We’ve been working very closely with the landowner and the local community members,” Wechuli says. “We educate the community about the bats’ roles in the ecosystem, from pollination to elimination of disease-carrying insects.” And these discussions have been working—the community has signed an agreement to join BCI’s conservation initiatives, which simultaneously offers them protection from rampant land-grabbing. “If you don’t have official papers in Kenya, someone else can just come and claim your land,” Mandl says. “We’re currently helping to get the original landowners’ official paperwork done so that they can actually prove it’s their land.”

The local community at Three Sisters has also been highly receptive to conservation efforts. But BCI’s involvement here isn’t just limited to the bats. “We are also looking at the other side of the coin: the livelihood of the community members. How do they survive?” Wechuli says.

entry way to Giant Three Sisters Caves
Photo: David Wechuli, Ph.D.
“Local communities are the primary stakeholders in our bat conservation project and crucial to our success. The local community’s involvement will build a sense of ownership and responsibility, improve the project’s effectiveness, and promote sustainability.”
—David Wechuli
closeup face shot of African trident bat
African trident bat (Triaenops afer)
Photo: Karel de la Cruz Victoria
If conservation efforts mean reducing agricultural deforestation, there must be alternatives to support the community. “We’re helping the community sector have green enterprises that also benefit the landscape and the bats,” Mandl says. “For example, tree nurseries, where they can grow their tree saplings but also sell the excess.” Wildlife tourism to see bats is another option to develop the local economy. “But we want to make sure that the tourism is sustainable, that it doesn’t disturb the bats,” Mandl says. “We still need to work with the community to get this idea to a level where they can benefit from it from the tourist side, but we know the bats are safe.”

Community efforts, however, look a touch different at Kaboga. With the local community, the issues remain largely the same. “The major challenge is awareness about the bats,” says Evarastus Obura, Founder and CEO of Angaza Vijiji. “The negative connotations of the bats are changing because we’ve run programs in schools and set up local action groups. We’ve seen significant progress.”

Where things differ, however, is with the developers—these are outsiders coming into the area. “There’s a need to not just focus on the locals, but also on the people coming in to establish enterprises,” Obura says. “Some of the developers I’ve met are progressively thinking, and they understand when you tell them about the bats’ contributions ecologically.” His current action plan is to continue his outreach, and he says, “establishing a formalized conversation that would help us understand how we could have a win-win for both parties.”

“There’s a need to not just focus on the locals, but also on the people coming in to establish enterprises.”
—Evarastus Obura
Ali Toya speaking to audience under canopy
Ali Toya explains the importance of bat conservation to community members.
Photo: Karel de la Cruz Victoria
Paul Webala looking at ceiling inside of  Makuruhu Cave
Paul Webala inside Makuruhu Cave.
Photo: Karel de la Cruz Victoria

What’s next for coastal Kenya

BCI will continue to develop best conservation practices at all three caves in the coming years, providing the local communities with the tools for long-term sustainability. “Local communities are the primary stakeholders in our bat conservation project and crucial to our success,” Wechuli says. “The local community’s involvement will build a sense of ownership and responsibility, improve the project’s effectiveness, and promote sustainability.”

In the near future, that means continuing education efforts and discussions with the local community and creating worldwide awareness. A film crew will visit Kenya this fall to document the ongoing work and share it with a wider audience. “This project will put Kenya on the map for bat research and conservation in the region, especially if the areas are formally protected and conserved by and led by the local communities,” Webala says. “This is just the beginning. We hope to use this as an example to venture into other areas and protect more bats.”