I have trouble believing you are being honest. Piling under wind turbines?! I have yet to see a dead bird under a wind turbine myself (but I acknowledge they do kill some). Published estimated averages are 4 to 18 birds per turbine per year [1]. Compare that to buildings (where we also don't pile up either) which kill man estimated 1 billion birds a year [2]
Yes, explicitly piling up under wind turbines. This was in the Western Ghats in India and my mother was sickened - (she used to be a regular trekker before Covid). I didn't initially believe her either. Btw, they were so effective as bird killers that wind-turbines were even acknowledged officially as "top predator". They change ecology drastically within a couple of years.
“Our central discovery is that wind turbines can act as top predators, by reducing the density and activity of birds, their prey are now released from the typical level of predation. This release causes a range of changes in lizards,” explained Dr Maria Thaker of Centre for Ecological Sciences at the Indian Institute of Science
> so effective as bird killers that wind-turbines were even acknowledged officially as "top predator"
This is using "top" in the sense of "apex", because turbines have no natural predators. The paper says you could imagine them as something at the top of the trophic web. The paper explores the impact on their prey populations.
That's opposed to "top" in the sense of "kills more than other predators" or whatever. I mention it because number-of-kills is what the rest of the discussion seems to be about.
[1] https://www.sustainabilitybynumbers.com/p/wind-power-bird-de... [2] https://abcbirds.org/news/bird-building-collisions-study-202...