Where were they from? Rose Comb Rhode Island Red are rare and pretty unlikely, but they do exist from a few small breeders. Having raised the heritage RC RIR in the past, they do not look to be that. The chicks doesn't have as a deep of red as one of the true heritage ones so I would lean heavily away from that assumption, along with lacking the brick body type and red wash down leg fronts. 1-Production Red mix, possibly with Wyandotte, 2-Production Red