Mysterious Eggs

For a long time the only chickens who laid eggs were Ester and Ethel. There were new eggs almost every day from both of them nonstop for a few months. Recently, however, their egg production has dropped just slightly and others have risen to fill the gaps. Betty, Marigold, and Millicent are all laying. We also suspect Penelope has left a few eggs in the nest boxes, but we have no proof of this. Ertha is also well beyond her due date to start laying, but she has not started yet. As far as we know, at least. Mysterious eggs the size and color expected of Ertha have appeared, but we haven't caught her in the act. She has started screaming very often and very loudly before marching into the coop. It is time and she is showing signs of egg laying, but we just can't catch her! With the start of summer, though, our slackers are finally picking up that pace and filling all of our egg cartons up.