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Feral Cats Are An Invasive Species in North America (and elsewhere)

10,000 Birds

You can make a similar map for the small carnivores, the Mustelids, such as minks, ermines, otters, etc. 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 billion birds and 6.9–20.7