The Visual Baby Poo diaries: TEN Bits Of Information.

Expect to find a greenish-black, tarry, sticky stool that looks like motor oil in your newborn's nappy. Since Meconium is made of amniotic fluid, mucus, skin cells, and other stuff ingested in the womb, it doesn't really smell - so you may not realise it's time for a nappy change.When your baby is two days to four days old, his stools will become lighter in colour - sort of an army green, and less sticky. This transitional stool is a sign that he's started digesting early breastmilk or formula and that his intestinal tract is fine.