I had left the eggs from several silkies to see if one would get broody and set on them, but once the nest got about 22 eggs one of the hens and a duck I have desided to start setting them. They are both cramped together in the nesting box together. Do I leave them alone and see what happens when they hatch? They are in a big pen with all my other chickens, and just have water pans for drinking and no ponds. Will the duck and hen fight over who will be momma or split baby's or what? Thanks in advance for you input.