These 6 eggs were all laid by the same hen on the dates written on the shells. I only have 3 hens and one is not yet laying and the other is a pullet and lays small eggs, so I know that they were all laid by the same hen. No other hen could have got in and laid them. Does anyone know why they are different shades of brown? The hen is about 3 years old and has loose droppings. I am worming her just now. She shows no other signs of poor health at the moment. She has no parasites, is eating well and is well feathered. Someone told me that egg colour is genetic, but that clearly is not the full story.