Feral Cats Are An Invasive Species in North America (and elsewhere)
10,000 Birds
JULY 22, 2014
Free-ranging domestic cats have been introduced globally and have contributed to multiple wildlife extinctions on islands. We estimate that free-ranging domestic cats kill 1.4–3.7 Here we conduct a systematic review and quantitatively estimate mortality caused by cats in the United States. billion birds and 6.9–20.7
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