I have 6 girls that are RIR mixes. Four have been laying for quite some time now, and several weeks after the 4, another one joined in on the egg laying. One is slacking. I know it's normal for them to vary on what age they start laying, but they all came from the same place, and this one is really , really behind the others as far as laying goes. I have 2 chickens that escape the run on a regular basis. I have followed them, and did find the one was stashing eggs at a neighbors house, but followed the other around, and she isn't hiding eggs. So , my question is- is that normal? For one to be so far behind the others in egg laying? They are all the same size, same fluffiness, same comb color etc. I have no clue which one is not laying. Everyone else is still producing an egg a day. Every so often I'll get 1 less. The weather hasn't been to cold at all. I've looked them all over and none show any signs of illness. Is there ever a case where a girl never lays an egg?