I like it -- it has promise, that's for sure.
But... I think the mid-section (where the hinge joints are, for want of a term) needs to be a fair bit beefier/thicker. Granted we're in the 24/25th/whatever century with the design, but still -- you're trying to move a LOT of mass on either side.
Also, to move it into the 3rd dimension -- how about making the wings move down (or up) when they move forward (or back)? There's your bird-flappy-ism.