Everything Eats Bats?

Why It Matters

The documented wildlife‑human interactions in a Marburg‑positive bat cave reveal a clear spillover risk, demanding immediate policy and public‑health interventions to prevent future deadly outbreaks.

Key Takeaways

• Over 14 wildlife species observed feeding on bats in Ugandan cave.
• Egyptian fruit bats in cave carry deadly Marburg virus, no vaccine.
• Predators may become intermediate hosts, increasing human transmission risk.
• More than 200 tourists approached the cave despite warning signs.
• Inter‑species contact highlights need for stricter cave access controls.

Summary

A wildlife camera study in a Ugandan national‑park cave captured an unprecedented array of animals—more than 14 species—feeding on Egyptian fruit bats, which are known carriers of the deadly Marburg virus. The footage shows blue monkeys, a palm‑nut vulture, a crowned eagle, Nile monitors and even leopards snatching bats, providing the first visual evidence of intense inter‑species interaction around a virus reservoir.

Marburg, a hemorrhagic fever virus related to Ebola, has a mortality rate up to 90% and, unlike Ebola, lacks approved vaccines or treatments. Humans typically contract it through bat excreta or contaminated fruit, and most of the 21 documented outbreaks since 1967 trace back to bat‑filled caves. The video suggests predators could act as intermediate hosts, potentially expanding the pathways through which the virus reaches people.

The cameras also recorded over 200 visitors approaching the cave at close range despite prominent warning signs, underscoring a disregard for public‑health advisories. The vivid scenes of monkeys grabbing bats and leopards standing upright to snatch them illustrate how easily the virus could jump from bats to other wildlife and then to humans.

These observations call for stricter access controls, enhanced surveillance of wildlife‑human interfaces, and targeted public‑education campaigns to prevent future Marburg spillovers. Managing such high‑risk sites could reduce the chance of new outbreaks emerging from these complex ecological networks.

Original Description

A plethora of predators snack on bats in this never-before-seen footage of interspecies interactions. The behavior is particularly notable for its potential to contribute to spillover of the deadly Marburg virus.

- Presented & Produced Maren Hunsberger

- Original reporting by Edward Chen

- Research footage from Alex Braczkowski, Bosco Atukwatse/Kyambura Lion Project, and Orin Cornille

- Stock Footage from Getty Images / hstiver / Andrey Sayfutdinov / BlackBoxGuild

- Marburg electron microscopy image from National Institute of Allergy and Infectious Diseases (NIAID)

- Supervising Producer: Shamini Bundell

From Atukwatse, B., et al. Multi-species foraging on a Marburg virus bat reservoir. Current Biology (2026). https://doi.org/10.1016/j.cub.2026.02.043