The thing that differentiates bleeding due to implantation and bleeding due to periods is theimplantation bleeding color as explained above. Implantation Bleeding vs. Period. There is little difference between menstruation and implantation bleeding to begin with and the first couple of days can be very confusing.
Ducks can spend a week laying eggs.. the timer for hatching does not begin until they actually begin to sit or brood.. Fertile eggs can be laid and sit and be fine with no mom on them. as long as they dont freeze.
Only the female duck will sit on the eggs (incubate them) the male is just their to fertilize the eggs when they are still inside the female (AKA the male duck mates with the female), and to protect the female duck while she is incubating her eggs. The males take absolutly NO part in incubation of the eggs.