Deffinetly silkie chicks. I raise them they are beautiful birds and so easy to handle, even my roos (mine anyway, every bird is different) my kids love ours, because they act more like lap dogs congrats!
at first i thought you had some buffs, but the photo on your avatar looks like they may be partridge. im not sure though, i raise whites, blues, blacks, splash and paints. I just got my first little buff and her wings arent comming in yet. from some partridge chicks that iv seen though i think that may be what yours are.