Actually the Hijra are more often eunuchs or transsexual men. There are far too many Hijra to all be persons born with ambiguous genitals.

While culturally intersex persons have been around since time immemorial, it has still always been the case that only genetically female persons could gestate and bear a child. That is one reason MTF transsexuality has been more culturally prevalent than FTM.

Freki