well I mean proving humans caused an extinction is probably a lot easier than proving cats did, but how about this: 1.3–4.0 billion birds and 6.3–22.3 billion

well I mean proving humans caused an extinction is probably a lot easier than proving cats did, but how about this: 1.3–4.0 billion birds and 6.3–22.3 billion mammals annually If we're not counting factory farms, the closest comparison I could find is: > We estimate that from 500 million to possibly over 1 billion birds are killed annually in the United States due to anthropogenic sources including collisions with human-made structures Regardless, this is obviously a huge fucking problem. Short of neutering the local humans, these ladies are probably doing the single most effective thing you can do with your time if you care about preserving the local ecosystem