"Rob the Ranger brings the untamed beauty of African wildlife straight to your screen with candid, unscripted footage ...

But of course birds in flight leave no trace—at least none visible to the naked eye. Bou, now 38, spent the past five years trying to capture the elusive contours drawn by birds in motion ...

Feathers and bird blood stains were found on both engines ... report also said the plane's two black boxes — which held flight data recorders and cockpit voice recorders — stopped recording ...