Do male bats sing near wind turbines?

Bat courtship songs in turbine rotor zones

A research team led by the Museum für Naturkunde has presented the first evidence that several bat species produce courtship songs in the immediate rotor-swept zone of wind turbines. The study suggests that bats are not only flying through these areas but may also be vocalizing for mating—behavior that could raise the risk of turbine collisions.

What the new evidence shows

Wind turbines present a known wildlife hazard, but risk depends on where and when animals are active. By detecting courtship singing close to the rotor zone, the researchers add a new behavioral layer: bats may be using these locations for reproductive communication.

Courtship vocalizations can occur during specific seasons and under particular conditions, meaning turbine risks could vary over time as bat breeding behavior changes.

Why it matters for collision risk

If bats are singing (and presumably active) in the rotor-swept area, turbines may interfere with their behavior and increase encounters. Courtship singing implies that bats are engaged in an essential activity—attracting mates or coordinating with other bats—which may keep them in danger longer than simple transit through the area.

What’s still missing

The summary doesn’t provide details on the species list, the recording/monitoring method, or how collision rates change where singing occurs. It also doesn’t quantify the magnitude of risk.

Bottom line

The finding strengthens the argument that mitigation should account for bat behavior, not just flight presence. Monitoring programs that incorporate acoustic activity in rotor zones may better identify high-risk periods, helping operators adjust operations to reduce impacts on bats during courtship activity.