Okay. To be honest, I’m not entirely sure, but it looks like the first is a pullet and the second is a cockerel. The little ‘strands’ of odd feathers in the tail on the second one and the absence of wattles on the first are what make me think so. However, I could be wrong.
Hello! Silkies are hard to sex, supposedly one of the hardest breeds to determine gender until age of maturity. Are you able to get a side-view picture of each, preferably standing up straight and not looking for food on the ground? LOL