This noise went on for at least ten minutes before they came into an open space. Low light, dappled. One juvenile starling DEMANDING food. Ignored by parent. You could not hear any other sound over this ROAR. I got the giggles.
For anyone who hasn't heard the voice of the young starling, it's a distinct raspy sound that can be heard three blocks away. The mother moved off into the leaves, no longer visible, but SCREAMING continued.