If there are a lot more females then males in a country, there could be a rise in births, and if it is serious it could lead to an overpopulation problem. If there are more males there could be a lack of births, and the infrastructure could be compromised. In both cases specific gender-related jobs could be in short supply or there might not be enough workers for a steady economy.
If a baby pulls their legs in toward their chest, it is a sign of abdominal or stomach pain. Something to do with the stomach.
It would grow because owls are predators to sparrows
Lol. Here I am.. Saying whatever the heck I want. :)