Quote:
You may not have read this previously, but it's posted often,
to mark the eggs when you put them under a hen to hatch. And check under her daily for new eggs/broken eggs, and remove any that don't belong.
Doing those two things can prevent a lot of problems.
If you don't have a 'bator to stick the late eggs in after the babies hatch, or another broody, it's probably best to just toss the ones that don't hatch (the newer eggs) from this bunch.
If you do have a broody, mark these before you put them under her.
Note on Marking Eggs:
A black sharpie works great, I've used them for years, they don't hurt the embryos, (no matter what anybody's always heard, if they say you must use only pencil, they were misinformed) and plain pencil rubs off. It's just a myth that anything else will kill/damage the chicks. People have patched cracked eggs with nail polish (full of toxic acetone) and had them hatch. A marker isn't going to hurt them. There are many posts, and some pics, from people using Sharpies to mark eggs. Mine hatch just fine, marked with Sharpie. If it was harmful, our eggs would not be hatching!