Mace Gill
Songster
This comment was referring to the clutch of four eggs that probably isn't staggered. I'd say the odds are good for a good hatch of the remaining three.Not only can they be discarded but Chicks die in them---the chicks that were some-what Incubated die. You do not have to allow that---learn what to do so Chicks that are not quiet ready to hatch don't have to die. Staggered hatches Don't have to happen---you just got to learn what to do so it does not happen.
The clutch of 12 or 13 could've been prevented ... that many eggs and staggered too long will mean under developed chicks that are likely already passed on. If she has no incubator, and the hen can't sit any longer, yes the tragic end is the possibility of potentially viable chicks not surviving.