The realistic owl is RKT, because she is for display, but she could be made out of cake. Most of the techniques on the owl are learned from a course of Kay Gajra of Kaykes. The branch is a combined technique I learned all over the place, though I had to figure out how to do it myself, because I wanted the branch to be rather slim.
She is fully made of white modchoc/fondant mix and then airbrushed in her color :)