Gerbert the gosling is strong and brave and has fun times with his family and friends but knows that, one day soon, he won't be able to keep up with them anymore. As Gerbert prepares for his final migration, he finds a way to show his flock that he will always be with them. Includes a one-page Note to Readers and an online Note with additional information useful for parents, caregivers, grandparents, siblings, and teachers.