LCcreekside
Chirping
It's interesting that she would go back to laying sooner when losing the chicks vs. losing the eggs but good to know that she would try to take over another nest if only losing eggs. That info may be useful in managing hatches.I think the biggest problem in doing that is that the hen just keeps being broody. She doesn't succeed in her hatching so she goes to look for more eggs again. By letting the mom have the babies for a week or so, they get it 'out of their system' and will go back to laying eggs sooner.
It's really odd that the one chick hatched so soon. What could be going on with that? Reckon it's got a speedy development gene? Could it just be the warm weather?
I hope your duck makes it. That is a strange place for a massive injury.