i have 2 three and a half year old new hampshire reds who all of a sudden stopped laying. the rest of my flock got attacked and killed by a fishercat and those two survived. one had some minor injuries that healed quickly the other had no injuries. i introduced 12 new chicks in june to them. they get along great with them but no more laying. are they just old or to scarred fro the attack and new chick?