If there is more than one Hen in the flock... that may have been a shared nest. Or it may have been an older abandoned nest that the current Hen had decided to start laying in, depositing her eggs on the pile with the others. It's really common in my flocks for the Hens to share nesting/laying spots. It's hard to say tho, Guineas are so secretive about laying/nesting. Usually my Hens don't lay more than 30 eggs each before they go broody, so I kind of doubt those were all eggs from the Hen you found on the nest, unless for some reason she had started laying there but left, and then she returned to lay there again some time later.
The spots and lumps and funny things in some of the eggs... (ewwies, lol) may have been that some of the oldest eggs had started to develop a while back, but were abandoned... or if it's been warm enough the sun may have started developing them, but they went cold and stopped developing.
I would keep tabs on that Hen and her husband... even tho it is late in the season, she may still be laying eggs if she wasn't broody. She'll probably choose a new spot tho (I'd still go check the old nest tho).
Glad the birds enjoyed then salvaged eggs. Great nutrition for them, I hard boil a lot of eggs for my flocks (and my dogs), and I just crush/crumble them up and put them in a feed pan for them, shell and all. My Peahens love them too.

The spots and lumps and funny things in some of the eggs... (ewwies, lol) may have been that some of the oldest eggs had started to develop a while back, but were abandoned... or if it's been warm enough the sun may have started developing them, but they went cold and stopped developing.
I would keep tabs on that Hen and her husband... even tho it is late in the season, she may still be laying eggs if she wasn't broody. She'll probably choose a new spot tho (I'd still go check the old nest tho).
Glad the birds enjoyed then salvaged eggs. Great nutrition for them, I hard boil a lot of eggs for my flocks (and my dogs), and I just crush/crumble them up and put them in a feed pan for them, shell and all. My Peahens love them too.