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Cats and Birds | American Bird Conservancy Predation by domestic cats is the number-one direct, human-caused threat to birds in the United States and Canada In the United States alone, outdoor cats kill approximately 2 4 billion birds every year Although this number may seem unbelievable, it represents the combined impact of tens of millions of outdoor cats Each outdoor cat plays a part
Cats kill more than one billion birds each year - Science News America’s cats, including housecats that adventure outdoors and feral cats, kill between 1 3 billion and 4 0 billion birds in a year, says Peter Marra of the Smithsonian Conservation Biology
FAQ: Outdoor Cats and Their Effects on Birds | All About Birds In the United States alone, there are 60 million to 100 million free-ranging, unowned cats These are non-native predators that, even using conservative estimates, kill 1 3–4 billion birds and 6 3–22 3 billion mammals each year in the U S alone (Loss et al 2013, Nature Communications)
Cats Pose an Even Bigger Threat to Birds than Previously . . . More birds die from cat encounters than from collisions with buildings, communication tower, or vehicles, or poisoning by pesticides Two-thirds of the killers’ avian victims are native species Cats also kill 6 9–20 7 billion mammals each year City cats tend to eat non-native rats and mice, which most view as a nuisance anyway