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If you leave eggs for several weeks/months in the nest they can rot.
Only if you have a broody, a rooster and you want chicks its wise to leave many eggs in the nest for days imo.
If there is no hen sitting on the eggs, you can mark the ones you leave behind and collect them a week or so later. As long as the eggs are still good (to eat). How long it’s safe to leave them in the nest depends on the temperature.
Normally I have two fake eggs that I leave in the nestboxes. I take away all fresh eggs to eat them. With only 6 bantams (3 oldies) the supply of eggs is just right for us ( my love and myself).
If I leave more eggs in the nestbox I have a broody within a week. Which is very inconvenient because I don’t have a rooster and I don’t want more chicks now.
My flock of 6 has enough space if I need to keep them locked in the coop/run because of the HPAI. Adding chicks without free ranging for the old flock would make it crampy.