I'm soon going to start collecting eggs to be shipped out. These eggs need to be marked with dates. I don't mark my eating/hatching eggs, but I'm not concerned about hatch rates on personal eggs, so I don't mind using older eggs with unknown dates. Anyways, I need to know if I can mark them with black permanent marker. Will it mess the eggs up? These are quail eggs, so a pencil certainly won't work.
Use a lead pencil. The chemicals and strong oder I am always afraid will soak into the egg and do the chick damage.
I use pencil on the quail eggs I get , it works ok on most but not all. I guess you could try a fine tipped permenet marker , I think alot of people shy away from it in case its bad for the futur babies but you do what you have to do .
This was a recent topic - try this: https://www.backyardchickens.com/forum/viewtopic.php?id=173329&p=1
