All red production breeds (not my forte, everybody else can figure out what they are), and I don't think your black chick is a Marans. Generally, Marans are feather-legged. I realize not all are, but it seems 90% at least have a few little tufts of down in that area.
Looks more like an Australorp to me.
~Alex
Looks more like an Australorp to me.
~Alex