The normal colour of the stools of babies can be very variable – from
pale yellow to dark green or brown.
The colour is due primarily to certain bile pigments which are naturally
excreted in the stool.
The stool in nappies can sometimes be mixed with urine, which can affect
its colour.
The stools passed by the newborn baby are black, sticky and tarry. During the first week after birth they
gradually change to a paler colour.
The stools of breast fed babies are generally paler yellow and softer
than those of the bottle fed infant.
The colour of the stools often changes when babies start solids.
The stools of
toddlers are usually brown; they may contain bits of food.