While I would want to see a bit of a higher resolution photo, I do believe I can see the lower part of the moon in front of the bottom beak. One can also see some greenish brown artifacts across the bird's back.

I imagine the original composition (assuming it's been manipulated) would be better. That said, I have seen photos wherein great care has been carried out to accomplish the same effect naturally (i.e., not manipulated) but most all I have seen involved staging with say a human hand where the back object is seen between two fingers, etc.

Mike