The first No. 2
Baby’s initial stool usually takes place within 24 hours after delivery. The meconium, as it’s called, is thick, black and tarry.
During the first week, it’ll turn to a pasty brown color before eventually transitioning into more standard infant poop. For breastfed babies, that means mustardy yellow and seedy; for formula-feeders, expect pasty, formed and varying in color.
Take a bowel
Little ones may soil their diapers once every several days or several times in a single day. As a general rule, though, younger babes poop more than older ones, and breastfed tots poop more than their formula-fed counterparts.
Varying shades of yellow, brown and even green are typically considered normal when it comes to your little stinker’s output. Beware of red (a possible sign of fresh blood), black (a possible sign of old blood) and white/beige (which could indicate a blockage in the liver or intestines), and call your pediatrician right away if you notice anything unusual.