Roman numerals. pl n the letters used by the Romans for the representation of cardinal numbers, still used occasionally today. The integers are represented by the following letters: I (= 1), V (= 5), X (= 10), L (= 50), C (= 100), D (= 500), and M (= 1000).
It takes 8 to 12 weeks for ducklings to become adults. Rate depends on the breed and the bird itself. Some wil mature faster than others. It takes 8 to 12 weeks for ducklings to become adults. Rate depends on the breed and the bird itself. Some wil mature faster than others. Source: Raising the Home Duck Flock by Dave Holderread.  <i>Source:</i> Raising the Home Duck Flock by Dave Holderread.
Allow adult ducks to swim unassisted. When ducklings are fully feathered with their waterproof, adult feathers, they can swim without your supervision. Depending on the type of duck, full feathers should be in place by 9-12 weeks of age.