The reason birds are going extinct is humans. Hunting, habitat loss, and climate change are far, far more impactful than cats. As much as they kill, cats shouldn’t even be making a dent in bird populations in most of the world (yes, there are islands and a few microbiomes where they have an outsized impact, and that is an issue that needs to be addressed).

Cats only have such a big impact because we drove those species of birds to the edge of extinction already.