I don’t think NJ has ducks like these. They are beautiful.
I'm not sure if the Hoodies migrate through NJ or not, but even if they don't you have some beautiful ducks in your neck of the woods. If you are near the coast, I woulds assume you have some of the sea ducks that migrate along the coast.
Check them out if you get a chance. I have always wanted to see them in the wild. Eiders and Old Squaw for example.