Mallard / Grey
A variant of Indian Runner (Anas platyrhynchos domesticus)

Representative Indian Runnerphoto — a dedicated image of this exact morph isn't available yet.
The ancestral wild-mallard pattern on the Runner shape: drakes with green head and claret breast, hens in brown stipple. The natural color base of the domestic duck.
Keeper tips for this variant
This wild-type pattern is the hardiest and most forgiving — a great beginner Runner, just give it the same upright bloodlines so body type stays true to breed.