I'm a great fun of the movie Rio since I was a child, really interested in beautiful feathers...
Due to some life reasons, I can't to put much effort into this work, but it's sufficient for me.
I made a feather placement tool for this project, you can create the neat feathers by controlling two curves.
Modifying feather guidelines.
Adaptive feather facing, or define it by ur self.
Setup basic feather settings.
Adjusting feather placement density.
Adjustable Tip & Root rotations.