They enjoy looking at adults. Newborns can see black and white and bright colors, like red and yellow. Newborns can hear. They react to sounds by blinking their eyes, waking from sleep, crying, or moving their whole body. They like hearing a human voice and will move in rhythm to talking or singing.
Newborns can taste and smell also.
They like warm objects better than cold ones. They can even recognize your smell. Newborns are born with reflexes. Reflexes are behaviors that help them survive and learn. Look for your baby to have these reflexes.