Help. Did my little duckling die?

[Leona33]

HI. I am in the process of hatching my first duck egg in 30 yrs. This little guy was alive. He was moving in the incubator and at day 25 was moving in the float test. Today is day 28 and there is no more sign of life. Should I pull the plug?

 

[Pyxis]

Why did you float test at day 25? If today is day 28, which would be the hatch date, then I would give it a few more days. What date did you set the egg? What temperature has your incubator been? Is it still air or forced?