As part of our Halloween "Harry Potter' theme this year, I wanted to make an animatronic Fawkes. Fawkes is one of my favorite characters from the Harry Potter series (and my costume is Dumbledore!)
The movement is based on two servo motors--one to turn the neck and one to open and close the beak. The servos are controlled by an Arduino board programmed so that the neck and beak move in a random order.
I got some great inspiration from this site http://www.socalhalloween.com/Project_Raven.html
, although his animatronic raven has many more degrees of freedom than Fawkes does.