WATCH: Bald eagle in Big Bear, California, returns to nest and reunites with sister

David Muir reports on the baby eagles in Big Bear, California. Scientists said 90-day-old Sunny might never return after fledging the nest, but she did to reunite with her sister, Gizmo.

​David Muir reports on the baby eagles in Big Bear, California. Scientists said 90-day-old Sunny might never return after fledging the nest, but she did to reunite with her sister, Gizmo.   David Muir reports on the baby eagles in Big Bear, California. Scientists said 90-day-old Sunny might never return after fledging the nest, but she did to reunite with her sister, Gizmo.