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.
Pekin duck embryos take around 28 days to develop in the egg at 99.5Â° F (37.5Â° C) and 50-75% humidity.A heartbeat can usually be seen by the third day of incubation when candling the egg. The eggs must be regularly turned during incubation.ekin duck embryos take around 28 days to develop in the egg at 99.5Â° F (37.5Â° C) and 50-75% humidity.