What breed of duck is used for commercial duck eggs

Question

Ive noticed most supermarkets now sell duck eggs, but having had ducks and knowing how infrequently they lay I wondered which type of duck do they use to supply the supermarkets.

Answer 1

Rubber ducks; it's so that they don't break so easily when they fall out of the ducks rear end

Answer 2

its a rare breed that can swim called the hadd

Answer 3

female breeds, tend to be used as drake eggs are the rarest things to get hold of

Answer 4

Some places sell Pekins, some Runners.. it just depends.