I came home just it time to find a cat jumping one of my RIR chickens I yelled and scared it away, it is not a wild cat it belongs to someone, not sure which one. I then looked to see if my girl was hurt and found that the cat had attacked my white Lakenvelder also there were clumps of feathers. I found them both unhurt but frightened. I can't sit home 24/7 if this cat comes back how likely is it that they can kill my girls, I used to have cats and they killed small birds and brought them home....but chickens? Any thoughts? thank you.