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Free-ranging domestic cats kill an estimated 6.3-22.3 billion mammals annually in the United States
Source: Nature Communications (2013)
Source
The impact of free-ranging domestic cats on wildlife of the United StatesNature Communications (2013)
Nature Communications. (2013). The impact of free-ranging domestic cats on wildlife of the United States. As cited in Cat Cognition. https://catcognition.com/statistics/wildlife-impact/#us-cats-mammals-killed-2013
1.3-4.0 billion
Free-ranging domestic cats kill an estimated 1.3-4.0 billion birds annually in the United States
Nature Communications (2013)
365M-1B
Building window collisions kill an estimated 365-988 million birds annually in the US, with some estimates exceeding 1 billion
The Condor / American Bird Conservancy (2024)
2.4 billion
Cat predation is the single largest human-related cause of bird mortality in the US, killing an estimated 2.4 billion birds per year
Nature Communications (2024)
2.9 billion
North America has lost approximately 2.9 billion breeding birds—a 29% decline—since 1970, according to a landmark study led by the Cornell Lab of Ornithology
Cornell Lab of Ornithology / Science (2019)
