I have 2 12 week old pullet who free range all day in my fenced in yard..early last night my chickens were hanging with us on the patio and i spotted a cat by the coop..i was ENRAGED...i chased the cat away..safely put my girls in the coop and locked it up..i was nervous letting them out this morning...I never saw a cat in my yard in all the years i've been here..and we have a lot of neighrbors with cats wandering out front but never in my yard...The cat is small...is it possible that my girls can kick the cats butt...or should i do something to make sure the cat stays away...any suggestion???