Before that egg, when did the bad layer lay her last egg?My chicken really did just lay a black egg today! Should I be worried?
This is very unusual. I have four chickens. Two are suplosed to lay light brown colored eggs and two lay brown. One is a really bad layer and very irregular. But I have never seen this expcept for this post. I did crack it open and have a picture of that
I think it this can happen when the egg gets stuck in the uterus. Do the have access to free choice oyster shell?
My peahen will lay dark eggs if her eggs get stuck, but it usually takes longer than three days for them to darken.
Any chance you could take her to a vet? I wonder if infection can cause that discoloration?
My peahen will usually have a stuck egg, then when she does lay it, it's dark, but not that dark, lol, Interestingly, after she lays a dark one, her next one is soft-shelled, so maybe you could try giving her some oral calcium?
