Decided I wanted to add duck eggs to my egg production. I heard the Khaki's were the best for egg production, but the farm store didn't have any. So I ended up with 2 buff Orphingtons and a Rouen (although I suspect it is actually a Cayuga. It is all black with just a touch of yellow on his belly.) This is my first time raising ducks and would appreciate any advice. The farm store said I can raise them right along with the hens, but that was all they said. Is there a duck feed I need to give them when they get older or is layer pellets for hens fine? Do they need any additonal supplements? Do they lay eggs on the ground or in a nesting box? At what age do they start laying? Of my two buffs, one has a darker head, is that an indication that it is a drake? Any idea of quantity of eggs per week? Any info even what I did not put here, anything that would be helpful would be appreciated. Thank you!!!