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Are there so many birds that cats don’t matter?

10,000 Birds

I had noted that if you took a quick look around you’d think there were a lot of birds and very few mammals. Of course, a lot of the mammals would be hiding. If cats displace ferrets, then that probably means that birds are getting hit harder than rodents, and among birds, adult birds are getting hit harder than eggs or hatchlings.

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

10,000 Birds

Dogs are similarly dispersed across size ranges, with Foxes, Coyotes, and Wolves taking prey across different parts of the size range. among the Mustilids, and Coyotes and to a lesser extent Foxes. We do know this: In areas where feral cat populations exist, they are often well established. billion mammals annually.