[cheese_goddess]

Yes, but cats and birds have existed together for, I don't know, millions of years? Without cats causing a mass extinction of birds. And why is that?

[micromacrofoot]

the increase of cats as pets seems like a possible factor, one rough estimate says the US has 3X more housecats than it did in 1970... so it certainly seems possible that we've thrown off a more natural equilibrium

https://www.researchgate.net/figure/Growth-of-the-house-cat-...