Fertility of first eggs layed by my ducks?

[chickenman]

are the first eggs that young ducks lay very fertile?

 

[greyfields]

Usually the first 5-7 are tossed. It also depends on the duck's age. In Holderreads' duck book, it gives a chart of average fertility based on the duck's age and which # of first and last eggs are typically/not typically fertile.