When a crow feels sick, it intentionally disturbs an anthill. In response, the angry ants swarm the crow.
The crow remains perfectly still with its wings spread wide. As the ants spray formic acid on its body, this natural medicine eliminates bacteria and fungi. Afterwards, the crow feels much better.
This phenomenon is called "Anting," a self-care behavior observed in over 200 bird species. By provoking the nest, they trigger the ants to spray formic acidโa natural antimicrobial that fights parasites and fungi on their feathers.