Xanas have children, which are called xaninos, but because they cannot take care of them—xanas cannot produce milk to feed their babies—they usually take a human baby from his cradle and put their own fairy child in instead (see changelings). The human mother realizes this change when the baby grows up in just a few months. In order to unmask the xanín, one must put some pots and egg shells near the fire, and, if the baby is a changeling, he will exclaim, "I was born one hundred years ago, and since then I have not seen so many egg shells near the fire!"
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