Read the following context and answer the question.
Context: He 'd heard about this phenomenon known as a firefly , and Mommy and Daddy were about to introduce him to some . Alas , once we got outside , none of the creatures could be spotted , but , in those moments , we fully experienced the anticipation of introducing our son to some of the wonders of this life . That 's what makes parenting worthwhile .
Question: What may be the reason they were n't seeing fireflies ?
Answer:


It was n't the season for them .