Than they probably ate a broken egg. Hard to understand what's in the picture. Is that a nest box? Why no bedding in the nest box? Is the surface hard? If my chickens lay out of the nesting boxes, on hard surfaces, often the egg cracks when it falls out of the chicken's bum.
Just keep an eye on it, if it happens again then there's a problem, if it doesn't happen again than it's nothing to worry about.
Just keep an eye on it, if it happens again then there's a problem, if it doesn't happen again than it's nothing to worry about.
