Feral Cats Are An Invasive Species in North America (and elsewhere)
10,000 Birds
JULY 22, 2014
And for thousands of years the lizards, rodents, and birds of North America adapted to Fishers, Badgers, Wolverines, Ermines, etc. We do know this: In areas where feral cat populations exist, they are often well established. On an island, the feral Cat eats all of those birds. billion birds and 6.9–20.7
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