You mean this one?I wonder why the one chick is barred. I didn’t see any breed that looked like it would produce barred chicks. It makes me really wonder what the father is.
Could have a Cuckoo Marans parent.
Or a Cream Legbar parent (barring), with the other parent being Black Copper Marans or some other mostly-black breed.
That's if the eggs really were Marans and Legbar, but since the photos don't entirely match the text description, and neither really matches the chicks, there is certainly room for questioning!
I'm assuming the father was a "female" that was mis-sexed, or else a male that got over the fence from somewhere.