This is a first. There are two chicks with two mothers. Three weeks ago the black hen started sitting on a clutch of eggs. About ten days ago, a white hen decided she wanted to sit on the clutch two. Sometimes the black hen would be on the eggs. Other times the white hen. After a few days, they had the eggs divided and they sat on them side by side.
Two chicks hatched and today the hens had them outside. The chicks were going from one hen to the other, treating both of them as if they were their mother. When one hen would find something good to eat and call for them, they would come running to see what she was pecking at. When the other hen did the same, they went running to her.
I have no idea how this will turn out. I’m thinking that one of the hens will end up being the mother that raises them, but who knows? Maybe they will come to a co-parenting arrangement. See Interracial Lesbian Mothers.