First thing of all : it is only one wing , ok !? So when you open the product do not think you will find the wings are the same as the video , and this is because you can simply reverse another wing and make it two wings , so it is not so great deal nor hard efforts .
The second thing is : As you can see This wing is rigged so you can animate it as you like , but when you do it you will find some bones of course with many names , but the most important name you will find at the bones is don't Touch that is because I mean it , really I mean it , because playing with those Ik bones may just ruin all the motion and the look of the wing , so they are just used as joint , and do all the motion you need are in the other bones which do not carry this name Don't touch .
For auto desk users , you know how to hide the bones , it is not so great deal to take care of the materials at Autodesk softwares , beside you will find textures for displacement to make it looks like as the wing you see in the pics , I just do not render with max so it appears well at iclone , but you just need to add it to the materials at 3d Studio max or whatever you use .
Now who said that Gerrafagons can not fly !? The wing made this availble and it is so easy to purchase and add it to any thing you want it to fly .