Not quite sure where to post this, but here goes. I have an established flock of laying hens, guineas, and Muscovey Ducks. They all free range in the afternoons about 3-4 hours. Well, the ducks are out all the time now as they refuse to be cooped anymore and rarely leave the pond. My husband wishes to add a couple of yard kittens to help control the field mice that sometimes invade when the nearby hayfields are cut. He has spent the last couple of days cleaning up after the mice and setting traps. No, the birds are not catching and eating them. Apparently they have sense enough to stay out of the coop. These kittens are about 8 weeks old and weaned. I am wondering... since they are kittens would they integrate well with the animals we already have, or grow into chicken killers regardless? Thoughts? Advice? Thanks!