Chick 2 appears to be lighter than Chicks 1,3,and 4 and appears to have the most reddening in the comb, so that is pointing more towards a cockerel, (Barred breeds are usually sex-linked. Darker=Female, Lighter=male) but it could be a trick of the light, because Chicks 1 and 4 also have slightly reddening combs (so it could also just be the breed). Out of them, Chick 2 is probably a cockerel, 1 and 4 are on the fence, and 3 has no reddening whatsoever and also very dark. 90% that she is a female. In the second group, 5 and 6 have reddening combs, while the combs on 7 and 8 are practically non-existent. I'm guessing 5 and 6 are cockerels, 7 and 8 are females.
This is just what I'm seeing, and people who have more experience with those breeds could probably be more accurate. However, anywhere in the lines of 3-5 from each sex (out of 8) fall into the approximate 50/50 category you would expect from straight-run.
Hope this helps, and the older they get, the more apparent the differences will be. Good luck!
