I don't see many feral cats around over the years, but did have a run in with one a few years ago. He was HUGE and hungry, would come in through the cat door (we had 3 at the time) and grab some food. I set a live trap for him I borrowed from the Matsu borough. Caught him that night, man he was a mean scary customer. 

Over the years we only had one cat that was a hunter/killer of birds. She would eat them in the house, left only the wingtips and feet. The cat I have now almost starved to death after being lost for 3 weeks years ago. She is not a hunter/killer, lol.... 

Actually my current cat was a stray that wandered into my yard and heart 9 years ago, turned out to be a great pet!