Fireflies!

by Julie Brinkloe

Fireflies is Julie Brinckloe's "reflects a classic theme in children's literature—the need to set something free in order to keep it." (The Horn Book)

A young boy is proud of having caught a jar full of fireflies, which seems to him like owning a piece of moonlight, but as the light begins to dim he realizes he must set the insects free or they will die.