Controversial step: Germany tests drones to control diving birds
Baden-Württemberg is testing drones on Lake Constance to control cormorant populations and protect threatened fish species, marking a new approach to an escalating environmental conflict.
The pilot project uses an agricultural drone to spray oil on cormorant eggs in hard-to-reach tree nests, preventing them from developing. An initial test on the Mettnau peninsula was declared successful, with several nests treated during a four-hour operation launched from a boat.
Officials say the method did not disturb other bird species, and cormorants returned to their nests after the intervention. Agriculture Minister بيتر هاوك called the test a success, while Environment Minister تيكلا ووكر said further trials will follow to assess its wider use.
The project aims to protect endangered fish such as grayling, nase, and brook lamprey, as cormorant numbers have risen sharply. In 2024, more than 1,800 breeding pairs were recorded in the region, many around Lake Constance, increasing pressure on fish stocks already affected by climate change and habitat changes.
Fishermen report severe losses, claiming the birds even attack fish in holding tanks during winter. However, scientists warn that the method may have limited long-term impact unless applied on a much larger scale.
The initiative has also drawn criticism from politicians and experts, who question both its effectiveness and transparency. As the cormorant is a protected species, the drone project is seen as an attempt to balance conservation with economic concerns without directly harming the birds.