I do have the ones marked with date layed. I cracked the one from yesterday and I don’t think it was fertile I couldn’t find a bullseye. I’m not even positive the ones my broody is on are viable as the week I collected I stored them on a bowl on the side as I didn’t know they should be in carton and not sure how long in nest box before I collect so they were really cold. I have just have to see when I candle. I’m setting up a bator today in preparation for eggs coming from fishmtfarm so I’ll give her a couple if those are no good.Take the ones you find on the ground and place in other nests. Be sure to mark the ones she started sitting on so if the other hens lay in the same.nest you don't get staggered development. It's a nightmare.