I have had only one major feather picking problem, when the flock turned on one hen and plucked her almost completely. Has anyone seen that happen before? She now has her own coop with a companion bird. Now that my hens are a little older, almost 4 years, their egg laying has slowed down a lot. I feed Nutrena layer, but I am wondering if I shouldn't try some supplemental aids. Does the FORCO help with egg laying?