I lost my whole flock to foxes when I was young and it was devastating. chicken wire should be renamed to something else, it's IMHO useless against coons. hardware cloth should be what is called chicken wire, it keeps out rats and coons if properly secured to 4/4 posts and burried 2 feet down around the edge. as for the coons, I've had friends lose entire flocks to them as well. they are relentless once they figure out they have a source of entertainment and food, especially if they have kits. If they are coming around regularly and if you have a gun or a shovel and a lot of gumption, I'd take them out. now that they have been successful they will keep trying and it will be a headache/heartache until they are gone or until you heavily fortify the coop.