Our chicks are 3 weeks old and I am planning on putting them out in the coop in another week or so. Our coop is in our barn, but there is a door that we can open so they can run outside. The chickens will have a large area that is enclosed by a chain link fence. I am worried that even when the chickens are grown the fence will not adequately protect them. Do any of you have chickens enclosed with just a chain link fence? I am thinking of wrapping chicken wire around the fence so I can let the chicks out-will I need to find a more permanent solution? Also-have you found that barn cats will bother grown chickens? I am worried that our cats will go after them. My daughter plays with the chicks outside inside one of those portable baby gates and the cats just hover around, waiting for the chance to get one of those chicks. How big to the chickens need to be before the cats leave them alone? I am paranoid to let the chicks out of the coop at 4 weeks-maybe I should top the fence with chicken wire as well?