"Fledge watch" began around May 13, as bald eagles are usually between 10 to 12 weeks old when they prepare to leave the nest. Gizmo and Sunny will remain in the habitat for one to three months after fledging, and FOBBV said they will likely be in and out of the nest during this time.

Younger sister Gizmo joined Sunny taking to the sky over Big Bear Lake for the first time on Saturday morning.

Friends of Big Bear Valley announced the news on Facebook on Monday with a clip from the live camera feed at the nest perched on a tree in Southern California's San Bernardino County. The nonprofit has been monitoring the eaglets, named Sunny and Gizmo, since they hatched in early March.