I can't be sure but is it possible the black one is a Blk Minorca? I currently raise the Black & Buff Minorca breed right now, and when they started growing up they kinda look like that, but your black hen does looks a little too small. So I guess it may be some sorta breed of bantam, possibly of the Dutch Bantam variety?!
However, The first one is a definetly an OEG Bantam, more than likely a Blk Brstd Red. I raised them back when I lived in Arizona in the early 90's along with other bantam breeds like the Birchen Cochin's, Blk Silkies, Gold & Silver Seabrights As well as a varity of Polish's! Bantams are fun & trusting, fancy little birds & I'm certain that you'll come to truly treasure them....No matter what breed of chicken they are!