Boy. Pray why do the birds sing?
Mother. One old bird sings whilst one sits on the eggs.
Boy. Why do they sit on the eggs?
Mother. To keep them warm, so that they may hatch.
Boy. What do you mean by that, pray, mother?
Mother. The young birds break the shells and come out.
Boy. What do they do then? do they fly?
Mother. Not at first: babes, you know, cannot walk.
Boy. But what do young birds do?
Mother. They lie in the nests, and gape for food.