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Cat Wars: The Devastating Consequences of a Cuddly Killer

10,000 Birds

They argue for the elimination of free-range cats entirely. The relevant numbers involving cats, the people that cherish them, and the birds (and small mammals and reptiles) that they kill are all too large to mean much; you might as well use the funny word “gazillions.”

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

10,000 Birds

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 mammals annually. Mammals cats Invasive Species Week' billion birds and 6.9–20.7 They are invasive species.

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Filling the Gap Left By DeBooy’s Rail

10,000 Birds

It is now believed to have been a fairly common resident of Puerto Rico and the Virgin Islands until the arrival of the first humans when it went the way of most flightless easy to catch island birds immediately after the arrival of man. Guam Rail Gallirallus owstoni.