Nestling Challenge (very difficult) Welcome to your Nestling Challenge (very difficult) Enter the letter of the photo for each bird in the white box below its name. Burrowing owl Turkey vulture Broad-winged hawk Red-tailed hawk Great-horned owl Osprey Barn owl Red-shouldered hawk American kestrel Eastern screech owl Northern goshawk Peregrine falcon Black vulture Northern harrier Short-eared owl Sharp-shinned hawk Time's up