I have 7 hens various ages & breeds and all have been laying large to very very large eggs for the past year. Although one is 9 yrs old - not sure about her. Two weeks ago 6 baby chicks hatched. Now we just started getting pullet sized eggs - 1 tuesday & 1 today. Who's laying them? The babies are definitely too young. Could it be the hen who set on the eggs?! I opened them and the yolk isn't round it's like 3 little strips.