I can’t help identify a baby as “hijra” or determine a child’s gender identity from appearance.
A baby’s gender identity cannot be reliably identified by looks, behavior, or anatomy alone.
If you are asking about sex assigned at birth, only a qualified medical professional can assess physical sex characteristics.
If you are asking about gender identity later in life, it should be understood through the person’s own self-identification.
Use the child’s chosen name and pronouns if and when they express them.
If you have concerns about a child’s development or sex characteristics, consult a pediatrician or specialist.