Incubating duck eggs

[Joel Brasier]

I am new at incubating eggs. I had 3 duck eggs incubating. At the 28 day mark, the first egg hatched, 2 days later the second hatched. My question is about the 3rd egg. Today it has been a week after the 28 days. I tried to candle it and couldn't tell if there were veins. Do I need to go on ahead and throw it away or wait longer?

 

[chickens really]

Did you start all the eggs on the same day? Are they all the same breed?...Is the egg clear or is it dark ?...

 

[jane s chickens]

65* this am

 

[Joel Brasier]

All started on same day, same breed and it is dark. I gently tapped on it and did not hear anything. I can not do a water test because there is a hairline crack in the egg that I noticed a couple of days ago.

 

[chickens really]

Possibly it did not survive....A Week is a bit too long....