These pictures from Wikimedia Commons tell a story.

Christian Jansky was capturing some nice closeups of an emu (Dromaius novaehollandiae) at the zoo in Stadt Haag, Austria while the bird stood patiently.

Suddenly the emu had had enough.  “Don’t come so close!”  He made a move to bite the camera.

Notice how the nictitating membranes are now covering the bird’s eyes so they don’t get hurt while he attacks.

I wonder what happened next.

(photos from Wikimedia Commons.  Click on the images to see the originals.)