If the white chick is an ISAbrown then it is definitely male. However, I would expect the comb and wattles to be much more developed, especially compared to the known pullets pictured. So that brings the breed of the white chick into question.
What hatchery did they come from? Also, can you get a clear picture of the comb?
What hatchery did they come from? Also, can you get a clear picture of the comb?