At 10:46 a.m. Monday, June 2, Sunny, one of the two eaglets that have captivated hundreds of thousands of fans across the world in recent months, fledged, leaving her sister, Gizmo, behind, according to Friends of Big Bear Valley.

Friends of Big Bear Valley, a nonprofit that maintains two web cams that livestream the goings on in the nest, reported Sunny’s first hovering as a developmental milestone as the two eaglets prepare to fledge, or fly away from the nest.

Celebrity bald eagle couple Jackie and Shadow experienced a parental milestone after one of their new baby eaglets left the nest and took their first flight Monday, June 2. Sister eaglets Sunny and Gizmo were recently trained for their big send off after hatching in their parents' nest in March in Southern California's Big Bear Valley,