I'll type it here because maybe some people might find it relevant.
I have a hen who can't stop laying. She's an EE and she's like 30 eggs in 30 days. She is so much in a hurry that sometimes she lay an early soft shelled egg because she doesn't give it time to get a shell.
The only way to give this poor hen some rest is to let her hatch some chicks every time she goes broody. Lucky for her, she goes broody every 3 months (1 month lay, 1 month sit, 1 month raise babies, 1 month lay, and so on). However she really struggle to switch her egg laying machine off even when she's broody. She's been sitting on eggs for 5 nights, and she still laid one egg every day. Yesterday it was finally a fairy egg, but today however she laid a large soft shelled egg, broke it, and made a mess in the nest.
I changed the nesting material, but the eggs now are filthy. Any experience with the hatch rate of eggs with yolk contamination? Replacing the eggs is a no. She's almost 1 week into sitting and I need her to hatch the eggs of an old lady, and she already has all I got.