[whocares2345]

Ecosystems also aren’t supposed to have uncontrolled prey populations, that are also being fed by humans. And since the number of other bird hunting predators is almost negligible anywhere humans live with their cats, this effectively balances put the lack of all other predators. If the cats wouldn’t kill those 2 billion birds we would drown in their shit and the resulting diseases.

[djtriptych]

This is deeply wrong on many levels. Let's start with birds of prey eating other birds. It's not true that there are no other predators / checks on population growth. A lot of animals eat eggs as well. And humans do a pretty good job killing birds with windows.

[peanut_worm]

There are lots of bird hunting predators, mostly larger birds.

Do you think native bird populations would spiral out of control if they weren’t killed by cats? That is definitely not true I am not sure where you would have gotten that idea.