I was staying briefly in a duplex house in the country not far from Atlantic City, NJ a few years ago. The other renters had a cat which they neglected and feed intermittently. Every few days I would find remains of robins, chipmunks, bluejay, mice, and the like. This cat made a real dent in the population of local song birds.
Cats are just killing machines. I have tried to convince so many people of the folly of letting their cats roam outside, only to be told that it’s the balance of nature.