They might have described the problem—a lack of females.
This could happen in one of two ways, either nutritionally, that what they ate tended to result in an imbalance in favor of male offspring; or, just as likely, something was killing off their women.
“In vitro fertilization studies show that high levels of glucose encourage the growth of male embryos while inhibiting female embryos.”
But high levels of blood glucose usually mean diets that are very rich in refined carbohydrates.
Or more likely, “When are you gonna take me to Mallorca?!”....girls tired of eating seals hitched a ride on a boat to somewhere.