I'm thinking of doing this for my next challenge, the guys I work with are some of the best in the business for this stuff (They did fawkes in Harry Potter 2 and the big creature for Harry Potter 3 with loads of feathers) so I have good resources. This sort of thing is basically done using the same principles as hair I think so I may write myself a plugin (or take the "easy" option and do it in Houdini!)

I'll keep you posted once I finish my tank.

Alan