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.
As the duckling develops inside the egg there is a loss of water from the egg and an increase in the size of the air cell. If the duckling is developing normally, the air cell should occupy about one-third of the space inside the egg at 25 days of incubation (common ducks).Weight loss can also be used as a guide.s the duckling develops inside the egg there is a loss of water from the egg and an increase in the size of the air cell. If the duckling is developing normally, the air cell should occupy about one-third of the space inside the egg at 25 days of incubation (common ducks). Weight loss can also be used as a guide.