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From a New York Times article passing along the startling news that cats hunt and kill birds:

The American Bird Conservancy estimates that up to 500 million birds are killed each year by cats — about half by pets and half by feral felines. “I hope we can now stop minimizing and trivializing the impacts that outdoor cats have on the environment and start addressing the serious problem of cat predation,” said Darin Schroeder, the group’s vice president for conservation advocacy.

As it happens, I’ve been trivializing the impact of cats on birds my entire life. I mean, cats kill birds. Bears kill salmon. Birds kill worms. The strong survive and the adaptive fitness of the species is improved. Cycle of life and all that. Why are we supposed to be upset about this?

But despite the fact that my own cats contribute 0% toward this avian holocaust, I understand that I have biases in this area. Maybe I’m taking things too lightly. So here’s my question: assuming that this 500 million number is correct, what percentage of the entire bird population does this represent? I did a bit of desultory googling but got bored before I found an answer. So I’ll put my vast audience to work. How many birds are there in the United States? Do cats kill 10% of them each year? 1%? A tenth of a percent? Just how serious is this national scourge of cat predation?

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And right now, a longtime friend of Mother Jones has pledged an incredibly generous gift to inspire—and double—giving from online readers. That's huge! Because you can see that our fall fundraising drive is well behind the $325,000 we need to raise. So if you agree that in-depth, fiercely independent journalism matters right now, please support our work and help us raise the money it takes to keep Mother Jones charging hard. Your gift, and all online donations up $94,000 total, will be matched and go twice as far—but only until the November 9 deadline.

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