I've been working on this off and on for a while. In case you don't remember the cartoon, here's a youtube video and a still of the character:
Duck Amuck - YouTube
I started out with modeling clay, because I really wanted a resin piece, not hardened Sculpey. I know there must be a better way to go about it, but I swear that it made sense at the time. I sculpted the head and part of the body as two separate pieces. Because the back legs are kind of long and thin, I was afraid they wouldn't cast well, so I added them on later.
The initial sculpt:
I cast them in resin, then attached armatures for the missing parts, namely the neck and the back legs. I covered the armatures in MagicSculp to complete the missing parts.
For size reference:
This is what I have now. The parts have been glued together, filled, and sanded. For the flagpole, I drilled a hole and inserted the ink tube from a pen, then topped it off with a bead. I just have to prime and paint him, then make the little "Screw Ball" flag for the pole.