15:35 Mom trows a chick out of nest in the water
It could be it was the freshly born #4.. but I have to take a closer look at
it looks like the chick was dead. And I think it was not #4. It was #3! it was already dead in the early morning as the female got up first time
Good to know: Chicks can survive up to two or three days without eating or drinking right after hatching because they are able to utilize the nutrients remaining in their retained yolk sac during this time.