theyre cute ideas but not really as 3 dimensional as your concept suggests
ie, birds wings would follow a broad curve, wouldnt they?
and the feathers, each one is a separate three-dimensional surface, no?
Have you tried the BEND command in Rhino?
Its so much fun, and gives you instant, if crude, three-dimensionality with no effort at all!!
naturally if your ideas demand more sophistication its a little more complex, but very doable
keep it up