I think humans far outweigh the cats in the scale for harm done to animal populations on this earth.
Are we gonna really start policing whether or not people let their cats out over some dumb birds?
The damage done by cats is part of the human related harm. The cats did not relocate of their own volition. We put them there.
If you think any animal small enough to fit in a cats mouth is “some dumb bird,” then I gotta say Mr. Random Dumb Ape, you sound like you would lose an intelligence test to the bird
Ay bud I get you failed biology but “let it be” about invasive species is the actual last thing you do
Well if some dude went around climbing trees, destroying nests and killing the native birds people would probably complain. The harm humans cause is due to their pets too, cats wouldn’t be where they are without humans. When there are too many outdoor cats in an area they breed a lot and effect bird populations which effects other parts of the ecosystem. Idk if it needs to be illegal but if it’s discouraged the numbers of cats killing off birds can be reduced. If people can teach their cats not to eat birds then maybe it would be fine.