This one had tail and othrr feathers before all the others. The wings when open come more to a point. Most all the back near the neck are narrow pointy shiny with greenish tint. The feet arnt a solid black and are noticeably thinner. Cant tell all combes look alike one all four chickd right now. This is the only other that has similar feathering and a lighter chest however nothing else like the one above.
This one is all dark nothing like others.
This one little harder to see and the chick in back is a barred rock.