I am having this boy problem too.
I have been playing this game for 336 hrs, have 3 totems, 15 of 16 puzzles solved, with the 16th started(hospital), but have only been able to get my population up to 27, because I have only 4 females, 2 of childbearing years. I am inundated with food supplies(4435), and have had to make everyone stop harvesting so I can use some of them up.
If anyone has any ideas...