Is the duck egg embrio alive or dead?

Hi, i have about 11 duck eggs going right now, two are in a small chick a bator i bought and the other 9 are in an incubator i made. I asked my brother to turn the eggs for me since i was at work but when i came home i waited a few more hours and went to turn the eggs again, i noticed the small chick a bator had the lid fully covering (it tends to over heat when the lid isnt slightly open) and i panicked so i turned the eggs and checked them both. One embrio was moving sligtly, he looks ok but the other one wasnt moving at all. The veins are there and everything but he seemed to only move or bob when i would tilt my hand. Im worried he over heated and died. The other ones in a home made incubator are kicking and moving a lot but the movement in these two seem to have slowed down. They do seem a little more developed then some of the other ones. Any advice? Its my first time hatching pekins