Feral cats should be trapped and euthanized regardless of whether they affect an endangered bird species or not. They aren’t part of the natural ecosystem and they don’t belong there.
Natural ecosystem? You sound like a Gore-ite.
Guess what? Lots of critters currently in the “ecosystem” aren’t natural to it—including us two legged critters. Most breeds of dogs aren’t aren’t natural to the “ecosystem” in the US, and let me tell you, packs of wild dogs are far more dangerous than feral cats. We had to shoot a number of them last year when they were running down our cattle. They killed several calves. These were dogs, not coyotes.
People bring their dogs to the country, then desert them to fend for themselves, and the next thing you know, they’ve joined a pack and have become a menace.
“They [cats] aren’t part of the natural ecosystem and they don’t belong there.”
Mice and rats are, though......
While they are at it, they should do something about the dang geese!