Will all these eggs under my broody hen hatch at the same time?

[makingshift]

I have a broody hen that has been sitting on several eggs for about a week. Yesterday I realized she had two new eggs under her, laid by other hens in the flock. Will these more-recently laid eggs hatch at the same time as the others? I have a hard time thinking that a week's difference won't matter.
Thanks!

 

[WalkingOnSunshine]

Those two new ones won't hatch. The main clutch all started developing at the same time, and will all hatch within the same 24 hour period or so. Then the hen will need to leave the nest to care for the new chicks, and the newer eggs will stop developing.

If you can, remove the newer eggs. Mama might not take care of her chicks right away if she's sitting there waiting for those to hatch. And use a pencil to mark the eggs in the main clutch so you can check for this problem and remove newer eggs right away in the future.

 

[makingshift]

Thanks! That is good to know. I'll mark the eggs tomorrow!

 

[bj taylor]

how does a broody hen react to a person putting eggs under her, taking eggs out? will this prompt her to leave her eggs?

 

[WalkingOnSunshine]

how does a broody hen react to a person putting eggs under her, taking eggs out? will this prompt her to leave her eggs?

She'll be upset, yes. And if she's a good mama, she'll probably try to peck you, hard. And she might growl at you. But if she's sitting tight, she'll stay on the nest and will go back to the eggs within a few minutes of taking her off them. If moving her once causes her to leave the eggs, then she wasn't sitting tight to begin with and it probably wasn't the best time to put eggs under her, anyway.

Your best bet is to make it so that other birds can't lay eggs in her nest. You really don't want to be disturbing her every day.