You were right, she gave up on them about 48hrs after initial pipping of the others. I don't have an incubator so it wasn't possible to take over for her.
I am sad, I promised myself I would not open the eggs, but I did, in case I could help. They had already passed. I don't know... if it might have acted differently ... If I had more experience... they might have lived.
We'll see if I am ever in this position again. For now there is nothing my tears or guilt can accomplish.
I am trying to tell myself that this is where natural selection happens, the strongest fastest babies survived to make more babies. But there is guilt when you see the tiny baby snug in his shell, waiting for life.
Now will come the next stage... Figuring out how many girls/ boys I have and finding homes for (any or all) of them, if I can. Otherwise building a new gender segregated duck coop.
So far her 3 are a lot of running around

which is nice to see.
I'll call the only duck vet in my area to see about vaccination. I would like to wait as long as possible as the car ride will be long and stressful, I don't want to put them at risk of illness by taking them too young.
Thank you so much for your patience with me. Wish I could have found a way to take a picture while candling the eggs. I guess I need to find a good flashlight for next time this happens.