To back up your point. There was a species of flightless birds on an island in New Zealand called Stephens Island wren (Traversia lyalli) and that was their only habitat.
After a lighthouse was built the lighthouse keeper had a pet cat that ate the bird to extinction.
It wasn’t a single cat, but yeah. The island became infested with them. After the damage was done, they sent men with shotguns to kill the cats. Whole lotta good all that did.
To back up your point. There was a species of flightless birds on an island in New Zealand called Stephens Island wren (Traversia lyalli) and that was their only habitat.
After a lighthouse was built the lighthouse keeper had a pet cat that ate the bird to extinction.
https://en.m.wikipedia.org/wiki/Lyall’s_wren
It wasn’t a single cat, but yeah. The island became infested with them. After the damage was done, they sent men with shotguns to kill the cats. Whole lotta good all that did.