https://sciencex.com/news/2026-05-striped-turbines-millions-birds.html
One recent study, in the Journal of the Royal Society Interface, actually proposes an ingenious solution: paint patterns on turbine blades that change "optic flow" seen by birds, the changing visual contrast experienced as a bird flies through its environment. Changing this optical flow could make turbines more visible, helping birds avoid them more effectively.
Researchers note, "The ultimate goal is to enhance the overall conspicuity of turbines under a range of natural conditions, ensuring that birds detect the structure in time to avoid collisions."
"By looking at the world through a bird's eyes, we are exploring new ways to prevent deadly turbine collisions. The idea is to blend sensory ecology with natural flight strategies, how birds scan, steer, and avoid obstacles, and use that knowledge to redesign turbine blades."
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One way to avoid birds smashing into wind structures is to change the appearance of turbines so that birds see them as an obvious threat and avoid them. Some studies suggest that painting towers and blades black, with reference to a bird's visual perception, can reduce collisions for some species.
In lab tests, kestrels and red-tailed hawks could spot turbine blades best when they had two wide black bands across a white surface. Narrower stripes were less effective.
A retinal study of kestrels tested computer-simulated turbine blades and found that staggered thin stripes on all three blades, or a mix of one black blade and two white blades, provided the clearest visibility by reducing motion blur.
For all that, lab studies mostly looked at how well blades could be seen, hardly a collision-avoidance measure. So far, only two full field trials and one small UV-paint test have been done, all at Norway's Smøla wind farm.
Painting one rotor blade black reduced bird deaths more than 70%, primarily of raptors, but based on only a small number of turbines.
Another study revealed that painting the lower sections black virtually halved the ptarmigan death rate, sometimes more, sometimes less.
Though these results are promising, the designs tested may not have been the best possible solutions.