I think you guys are confusing the terminology. Bearded vs non-bearded is different than if the extension of the lack of neck feathering in birds carrying the NN gene extends to below the chin. For instance, since it has a bowtie I know it is heterozygous (both chicks). What breeding did the first chick come from? (what I mean by this is was it SGxSG, bearded silkie X SG, nonbearded silkiexsg, etc)
I am betting hatchmates that were silkies are bearded, correct? Meaning both chicks are genetically bearded but one beard is not present due to the NN gene.