Donald J. Trump often cites a very questionable number. Then he shows a lack of credibility by continuing to repeat it - even after it has been debunked. A number also needs to be put into context. How does it compare with other related numbers?
Back on June 2, 2016, there is an article by Vanessa Schipani at FactCheck.org titled Trump’s Hot Air on Wind Energy which said that:
“Scientific studies have come up with a wide range of mean estimates concerning bird mortality due to wind farms – from 20,000 to 573,000 bird deaths per year. But no study has estimated that wind farms presently kill 1 million birds a year, as Trump claimed.
…A 2013 Nature study by Loss and others estimated that ‘free-ranging domestic cats kill 1.3–4.0 billion birds’ in the U.S. annually. But the researchers added, ‘Un-owned cats, as opposed to owned pets, cause the majority of this mortality.’
In another study published in the journal The Condor in 2014, Loss and colleagues also estimated ‘that between 365 [million] and 988 million birds … are killed annually by building collisions in the U.S., with roughly 56% of mortality at low-rises, 44% at residences, and <1% at high-rises.’”
There is another article by Sophie Lewis at CBS News on October 23, 2020 titled Trump claims wind energy “kills all the birds.” Cats and windows are actually much more to blame. She said:
“During Thursday night's final presidential debate between the president and former Vice President Joe Biden, Mr. Trump reiterated his stance against wind energy with a peculiar claim: It ‘kills all the birds.’
‘I know more about wind than you do,’ Mr. Trump told Biden when moderator Kristen Welker turned to the topic of climate change. ‘It's extremely expensive. Kills all the birds. It's very intermittent. Got a lot of problems.’ "
A more recent article by Hannah Ritchie in By the Numbers on January 30, 2024 titled How many birds do wind farms kill? had the statistics that are shown above in a horizontal bar chart with a logarithmic scale. Cats killed 2400 million birds, while wind turbines killed just 1.2 million. So cats killed 2000 times as many as wind turbines! And cats were one of six categories that killed more birds than wind turbines did.
There is also an article by Joe Schwarcz at the McGill Office for Science and Society on October 11, 2024 titled The Windmills in Donald Trump’s Mind. And another article by Michael Doyle at E&E News on September 12, 2025 is titled Wind turbines aren’t the biggest threat to birds.
An image of wind turbines in Power County, Idaho was cropped from this one at Wikimedia Commons.








