What would cause a duck to die at day 26 incubation? When I checked on the egg in the morning there appeared to be a light brownish half-dollar sized spot near the small end of the egg (noticeable from the outside of the egg) . I candled it and then duck showed no movement for hours. The egg also got cool fairly fast which I experienced with another egg last year that hadn't made it either. The duck looked fine and normal, it was very cute. But just didn't make it. Never pipped. It seemed like it's head was awfully close to the small end of the egg. Is it possible that the duck should have pipped into the air cell but wasn't positioned right???