Eh, my cat has the disability of a bell around his neck. He's killed quite a few invasive lizards, but I can say with confidence he's never killed a bird (he's very proud of the aforementioned lizard kills, and would absolutely be showing off any birds he managed to catch). I've watched him fail hilariously at pouncing on a butterfly.

Bells are perfectly fine. I'd feel much worse cooping him up in a house all day every day.

Why is it everybody else's responsibility to provide you with the situation necessary to have pets? Why didn't you secure the kind of housing needed before becoming a cat owner?

You can take them outside, but they should be leashed.

And I don't know why you're making a demand like that. Why is your attitude like this?

If your usual reaction to finding out you're doing something wrong is to demand a stranger change drastic things about your life to resolve a problem you're causing, then it's harder to have sympathy for the situation you described in your original post here given that we only have one side of the story.

Do you let your cat roam free? How many birds is letting your cat outside worth? cats are responsible for the majority of bird deaths in the united states.

Don't keep pets you don't have the room for.