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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. Still, with the help of various sources, the authors have a try: Ninety million cats live in 46 million American homes; There are 100 million feral cats that live outside and eat mostly wildlife, and 50 million owned cats (i.e., By Peter P. Marra and Chris Santella.

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How many birds are killed by windmills and other green energy projects?

10,000 Birds

A recent meta study ( The impact of free-ranging domestic cats on wildlife of the United States ) that applied strict inclusion criteria and some fancy statistics estimates that 2.4 Also, in relatively natural, or wild, lands in much of the US the feral cat population will be limited by a healthy wild predator population.

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