A chick and a duckling

9 ducks eggs went into the incubator last month, or so we thought. On Tuesday last week, nearly a week early, one of the eggs hatched. What emerged was a chick rather than a duckling. Somehow a hen egg had got mixed up with a duck. The lone chick went into the brooder box. Yesterday one of the duck eggs hatched. Sadly, nothing came of the others. The duckling is now with the chick in the brooder. They seem to be getting on well.