My hens will be a year old in February. I have 16 RIR's, 6 BO, 6 SLW, 2 PR, and 2 EE. I am wondering if after the first year their eggs will get bigger. I do get large eggs from them, but not consistently. More than half of the eggs I gather each day are small to medium sized eggs. I don't mind, but some of my customers have asked me. So, I am wondering if as my hens "age", their egg size will increase?