The female can only get pregnant once, whereas a single male can impregnate multiple females. In other words, if they miss one female, there can only be one pregnancy, but if they miss one male, there could still be many pregnancies.
The female can only get pregnant once, whereas a single male can impregnate multiple females. In other words, if they miss one female, there can only be one pregnancy, but if they miss one male, there could still be many pregnancies.