Do wind turbines really kill that many birds?

Wind farms are often labeled as “bird shredders”. However, two new studies show that the reality is different.

The energy company Vattenfall, in cooperation with the technology firm Spoor, which specializes in AI bird monitoring, continuously monitored one turbine in the offshore park Aberdeep for a period of 19 months (summer 2023 – end of 2024). Result: not a single recorded bird‑rotor collision. More than 99.8 % of migratory birds (both day and night) avoided the turbines. Even during intense nighttime migration, the collision rate did not increase.

NABU (the German equivalent of the Czech Ornithological Society) estimates that about 100,000 birds die each year in Germany due to collisions with wind turbines. It sounds like a lot until the numbers are compared with other causes of bird mortality:

Glass facades: up to 115 million

Road and rail traffic: ~70 million

Cats: 20–100 million

High‑voltage power lines: 1.5–2.8 million

Wind farms: ~0.1 million

In other words – wind turbines are not even in the Top 5 causes of bird deaths.

What to take away from this? Bird protection and the development of wind energy do not have to be at odds. The key is smart planning – avoiding migration corridors and nesting sites, using radars and automatic turbine shutdowns, or possibly color‑coding the rotor blades.

Blanket condemnation of wind turbines as “bird shredders” does not help the debate, just as ignoring real risks to raptors does not. Energy transformation and species protection go hand in hand – when we approach it thoughtfully.

Source: https://www.agrarheute.com/energie/viele-voegel-sterben-tatsaechlich-windraeder-antwort-ueberrascht-640100