chinese x Graylag goose Hybrids.

All the geese are domestic hybrids between Chinese and Greylag Geese (Anser anser x cygnoides). The Mallards are wildtype (Anas platyrhynchos).

http://en.wikipedia.org/wiki/Greylag_Goose

http://en.wikipedia.org/wiki/Grey_geese

These look like various breeds of domestic geese and ducks. I'm not 100% sure, however, the ducks look like Rouen drakes and the geese look like Pilgrims and maybe Toulouse, but they could easily be mixed breeds.