I read about someone who did that. She got her cats as kittens and every time they stalked birds she squirted them with a water gun. Apparently they quickly gave up their interest in trying to catch birds! I was a bit disbelieving but maybe that’s the answer!Why can't we train them to ignore small birds but exterminate rats, mice and the odd pigeon?
And people we don't like? Now that would be vair useful.