I have 10 new hens this year - they are 7 months old and have been laying for a couple of months. The first eggs were small (very cute). They are all now average size except 1 - which is still very small. I don't know which hen is laying it, but do you think that is the size it will stay? I have Rhode Island Reds, NewHampshire Reds, Buff Brahamas and Brown Leghorns.