as a huge lover of birds, 90% of the concern against wind turbines being used for energy is literally just pro fossil fuel propaganda. birds ARE at a risk however there is a lot of strategies even as simple as painting one of the blades that reduces a lot of accidental deaths. additionally renewable energy sources will do more in favor of the environment that would positively impact birds (and all of us). one study found over one million bird deaths from wind turbines. while that is a shockingly high number and we should work to drastically shrink it, at least 1.3 billion birds die to outdoor cats on a yearly basis. it was never about caring about birds
The study also estimates cats kill between 6.3–22.3 billion mammals annually, and this is JUST in the united states. Many other countries, like my own, have native fauna that are similarly (or more) vulnerable to domestic cats. Also don't forget that, while cats are the highest cause of bird fatality in most places, right behind them are building windows and cars. They're in turn followed by powerlines, communication towers and agrichemicals before it even gets to wind turbines. The exact order will differ depending on the country the study is in, but it is largely the same story everywhere. The point being, if the same people decrying wind turbines are also not calling for an end to cats, cars, infrastructure and pesticides, it's not about the birds.