Pleased to report that these inherited cats are incompetent bird hunters, so far. They stalk, yes, but have not yet caught any of the many birds. Birds are very wary and smarter than their teeny brains would indicate. As long as the cats continue to fail as predators, they can stay. They’re going to have to accept living within sight of chickens come Spring (within a tightly-woven hardware wire fence). I also want a nasty protective rooster. I remember the banty roosters my grandma Lynn had when I was young. Nobody messed with them. They ranged freely and her cats steered clear.