We have 3 females (1 Cayuga and 2 white layers). They are 3 months old, happy and healthy. They free range in the backyard during the day, and are penned at night. The last couple of weeks they just have not been eating their kibble. They will certainly eat any vegetables given to them, and seem to graze all day on bugs or whatever else they get off the ground. Maybe it is just that there is so much stuff to eat naturally this time of year. Should I be worried?