From what i have read and understood the previous statement i said is true and that as day old until feathers the cockerels will be more white and then pullets will be a redish tint. I can't really see the pictures that well but maybe that bnit of info will help. http://www.feathersite.com/Poultry/CGP/Sex-links/BRKSexLink.html here is a great example about half way down the page. It shows both sexes at 6 weeks and again at 8 months.
