Im going to show you guys how I made this creature layer by layer.
There's not going to be a explanation by every step so I discribe here how I worked.

First I just started to copy, past, warp (puppet tool cs5), adjusted colors and shapes etc.

On the end I just started to make shadow and highlight layers, and I used the burn, sharpen, light tool very much.

At the very end I started adjusting the final colors and highlights, shadows so that it looks like a new creature and not just peaces of a bird copied on a cat!

Hope you guys like it and comments are appreciated!!

Thanks in advance !