One of my Australorps laid her first egg today, and it is the size of a pretty standard store bought egg. I feel bad that this was her first egg! My other Australorp that just started laying has been having eggs barely bigger than a Robin's egg, and my EEs that have been laying for two-ish weeks have eggs that are probably 2/3rds the size of store bought eggs. They started small and have been gradually getting bigger. This girl decided to start big! Unfortunately I don't know which one it is as there are two left to start laying and both have been showing interest in the nesting boxes the last couple of days.