[jojobas]

And cats kill even more than building apparently. Screw cats, or rather people who let them roam free.

[buzzerbetrayed]

Why exactly is it a problem with cats killing birds? All sorts of animals kill all sorts of animals. Why are you specifically bothered by this pairing?

[mlyle]

Because predators usually reach a nice equilibrium with prey species, although it's often oscillatory.

But if people create a constant stream of excess feral cats, then pretty soon cats decimate songbirds.

[jojobas]

Because these are often invasive animals supported by people destroying endangered animals.