I would highly recommend Mr Naab at Willow Creek Taxidermy. He did my bird last year and I have not one single complaint about the entire process. His website has some recommendations in regards to how to handle the bird, and you can always call him as he is very helpfull.
When I dropped off my bird I had to pay a little up front to cover the amount that Mr Naab was going to have to spend on it right away. I wanna say it was around a $150 when I dropped it off. A friend has also over nighted a duck or two to him without issue. Again, I would recommend looking at his website and then shooting him an email or calling him. Can't overstate how good his work is.
If you have any more questions about it shoot me a PM.
Anthony