I thought that something terrible had happened to this kookaburra's beak when I first saw this photo. Regular readers will remember there's one around here with a deformed beak and I thought this was another.
But no, all is good. He was just doing his "Exorcist" impression and turning his head as far around as he could looking for lunch. He's quite normal, as you can see above. Just has eyes in the back of his head apparently.