Scientists have uncovered the secret behind how common noctule bats migrate long distances. Contrary to previous assumptions, they don’t rely on internal navigation or magnetic fields, but instead harness wind energy by surfing incoming storms.
Researchers tracked 71 female bats using GPS and internet-connected trackers, revealing that they prefer migrating on warm nights with lower crosswind speeds and favorable tailwinds. This allows them to conserve energy and travel more slowly.
Notably, the scientists discovered that bats tend to migrate during the first half of the spring season when wind support is better. However, pregnant females become more cautious later in the season due to reduced feasibility for storm surfing.
The study highlights two major threats facing bat populations: human-induced climate change and white-nose syndrome. Without action to address these concerns, the future of bat populations hangs in the balance, according to Dr. Liam McGuire, co-author of the study.
Source: https://www.salon.com/2025/01/02/bats-surf-on-storms-study-finds