It's day 20 for my piebald clutch, and the last egg laid is clearly on it's way out: black and pink discolored patches on the bottom, like it's rotting from the inside.

It's currently attached to the rest of the clutch. Should I detach it? How much risk does it pose to the other five healthy eggs (in particular, to the one it is currently touching)?

And if I should detach it, how do I do that? Dental floss didn't work. I guess I could just cut the dying egg off when it gets really bad, but I'd rather not do that until it's clearly dead. Plus it'll make a mess, and potentially let more bacteria out.

(I see a lot of people detach the eggs from one another at the beginning, right after they are laid. How do you guys do that?)