My girls are not outside on their own yet (they are 9 weeks old), but I'm wondering: at what age/size would neighbourhood cats lose interest in them? They are LF Welsummers. I am thinking ahead to the day I can let them out for a few hours before dusk (after their new coop is finished) as recommmended, but I have 2 cats on each side of our house and 2 across the road, and they all wander at that time of day...can a full-grown hen defend herself against a cat?