I have a Black Australorp hen who just started laying. I also have Silkies who have been laying for about a month now. This is my typical Silkie egg that I get daily. This "mystery" egg showed about a week ago. I have one Silkie hen who is really small so I figured it was hers. But last night I saw my BA hen go up to the nest and lay what I thought was her first egg. Do you guys think the two brown eggs are from my BA hen? And I read that Black Australorps are supposed to lay large eggs but her egg/s are smaller then my Silkies. Will her eggs get larger as she grows?