One of our duck lays eggs and hatch them and at the same time a hen lays hers but in the process of hatching her eggs, the little duckling were hatch.

Immediately the hen left her eggs and was nurturing the ducklings. It was suppressing, not until the hen eggs got spoilt that I knew it was serious.

So can the hen actually nurture the duckling?

It should be able to. But don't expect those ducklings to swim anytime soon.
What happened to the duck that laid those eggs?

Your hen is confusedly blind

Don't bother your self , just pack the ducklings and give them the required treatment.. Because the hen will soon discover that they are nt hers

spartan117:
It should be able to. But don't expect those ducklings to swim anytime soon.
What happened to the duck that laid those eggs?

8

the duck left the ducklings to the hen

Nah the duck and the hen understand the situation!