I wonder how many birds are killed by cars every year? Or by large windows? A bit ridiculous to me. I've no interest in prioritizing the lives of birds over our own if it requires avoiding technology.
What can be said with absolute certainty is that wind turbines are really the least of all problems for birds in America, even if their numbers multiply. If birds could, they would snuff out all the house cats.
- Vehicles: It is estimated that in the United States each year, 89 million to 340 million birds are killed by vehicles. This number varies depending on which study is cited and what methods were used to make the estimates. One of the most well-known studies was conducted by the Smithsonian Conservation Biology Institute, which estimated in 2014 that 169 million birds are killed each year in the United States by vehicles.
Source: Loss, S. R., & Will, T. (2019). Estimates of bird collision mortality at wind facilities in the contiguous United States. Biological conservation, 237, 230-239.
- House cats: It is estimated that between 1.3 billion and 4 billion birds die each year in the United States due to house cats. A study by Peter Marra and Chris Santella in 2016 estimated that house cats are responsible for the deaths of up to 3.7 billion birds in the United States.
Source: Marra, P. P., & Santella, C. (2016). Cat Wars: The Devastating Consequences of a Cuddly Killer. Princeton University Press.
- Wind turbines: According to a study by Scott Loss and Tom Will, approximately 140,000 birds die each year in the United States due to wind turbines. However, the 2019 study also shows that this number is comparatively low compared to other human activities that kill birds.
Source: Loss, S. R., & Will, T. (2019). Estimates of bird collision mortality at wind facilities in the contiguous United States. Biological conservation, 237, 230-239.
- Windows: It is estimated that between 365 million and 1 billion birds die each year in the United States due to windows. A study by Scott Loss, Tom Will, and Peter Marra in 2014 estimated that up to 988 million birds collide with windows each year.
Source: Loss, S. R., Will, T., & Marra, P. P. (2014). Direct human-caused mortality of birds: improving quantification of magnitude and assessment of population impact. Frontiers in Ecology and the Environment, 12(5), 246-252.