Believers contribute every action to god, and give thanks to him. Even if it is something bad they say he has wisdom which we cannot understand. When you ask a pregnant lady "is it a boy or a girl?" she'll say "Whatever god gives me I'll be happy". I found an article recently which blames man made air-born chemicals for the growing birthrate of females in Greenland and Russia. These chemicals affect the human and wildlife populations alike in tricking the foetus into changing the sex of the unborn. This is proof beyond a shadow of a doubt that humans are causing this phenomena and not god. In some cultures having a female baby is considered a catastrophe, but that is another story. So no matter how much you pray for a baby boy, chances are it's a girl if you live in the doomed area.
Here is the link to the article