Rowly,
I have two species of domestic duck in my lake right now, cayougas and giant white pekin ducks. Both of which didn't even seem to notice when it got down below 20 degrees and wouldnt fly off if I shot at them. The giant white pekin duck is both an excelent laying duck and one of the best tasting birds I've ever eaten. If you're not planning on ever eating them or thier eggs I prefer the cayougas. They are mostly black but with beautifull blue and beetle green heads with similar coloration on thier wings. Cayougas also dont leave messy white feathers all over the lake like the others can.
The only place I know of where you can buy ducklings and/or goslings is Welp Hatchery
http://www.welphatchery.com . I've bought several species of birds from them and I do trust them.
good luck with the ducks
-Scott
