Don’t throw them out. If you have an incubator, you can hatch those too.
My broody collected eggs and I also lost the markings. At first I just took away the eggs that I knew were snuck
In the nest, but once the markings were rubbed off, I had no clue and we were already around day 15.
On day 22 I took the eggs and put them into the incubator. She got day old chickens instead to get her off the nest already. She was sitting for months and couln’t hatch a thing. First timer. Anyway
After 4 days I candled to see if there were any unfertilized ones. I threw those out. I floated the rest that I was not sure of, I didn’t float those that were obviously moving. I left them in the incubator without turning since I didn’t know if any of them were in lockdown stage or not.
On day 31 and 32 I had two chicks and today is day 35 and one is zipping. I am watching this one because it is zipping in the wrong direction and I think it will get stuck.
I had 4 eggs left and one I was not sure about since the float test was iffy too but it is so dark in the egg I can’t see anything, I know there is a full grown chicken in there. Once this chick hatches today, I will float the last one again and go from there. It has been long enough for a full grown chicken to hatch.
One problem I have now is that the broody is already happy with the chicks she has and she rejected the little one I tried to sneak under her a week later. The original chickens were 9 days old and the new one was 2 days old. She did not accept it.
So I will have 3 chickens grow up without their mom, but it’s a good problem to have: I have more chickens than I expected. It is summer time and I can leave them in a chicken tractor or in the shed and integrate them in September before it gets cold at night.