From little bird electronics I got the second servo for the tail so that they would be matched. This is now installed but not yet plugged in or configured (although I have written the code already, so hopefully it works!)
More importantly, part of my order from DFRobot included a pan and tilt kit, which I have constructed and installed. Bernie can now look around - up and down as well as left and right. To do this though I had to CUT OFF HIS HEAD! Normally it is measure twice cut once, but I think this time I may have measured about 20 times. That cut would be hard to undo!