Here is a rare bird’s-eye (pun intended) view of how an eaglet uncurls itself from inside the egg in the final stage of hatching. This video is of the hatch of BC14 on 3/11/19 at 10:32 at the Tennessee Bluff City cam, operated by East Tennessee State University.  I’ve slowed the stream to 10% of normal speed and added arrows to indicate the back, head, left wing, right wing, beak, tail, legs and feet, egg tooth (yes! the egg tooth!), umbilicus, and receding yolk sac of the new hatchling.  The eaglet has its back to us and its head is down, tail up.