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

10,000 Birds

According to the US Fish and Wildlife Service , there are about 10 billion breeding birds in the US. The maximum population size may be closer to 20 billion in the fall, and 10 billion at the start of the Spring breeding season. In other words, cats may be a very severe problem in some places, but in other places not a factor at all.

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Feral Cats in American Cities

10,000 Birds

If left unchecked, free-roaming cats will breed and their populations increase at locations where they find suitable shelter and food, resulting in environmental/property damage, and public nuisance. Free-roaming cats will hunt and kill birds, small mammals, reptiles, amphibians and fish, resulting in wildlife mortality.