Do chickens and ducks get hernias? This is the abdomen of a duckling that I helped hatch yesterday, two full days after all the others had hatched.
That looks like it didn't finish absorbing the yolk correctly. I personally would cull it and end it's suffering.
I am not sure on that one, I can't tell if anything important is out and drying up... it could go either way. I would watch it catefully, make sure it eats and drinks and isn't pecked on. If it stays active, it could be OK.