The third eaglet has hatched. This video seems appropriate.
Link to video
From the comments:
The method to make this availbable to film without harming the embryo is developed by my grandfather, whose name appears as "professional consultant" ("tudományos tanácsadó), "Dr. Braun Sándor főorvos", (Dept. head. doctor) at the closing titles. He developed the method during his pathology reserach into tumoruous illnesses in his lab, in the Budapest, Péterfy Sándor str. Hospital, Dept. of Pathology, which he led until his early death, and where this film was shot.