Yes. Any chick with a bright pink comb by 10 weeks old is male. Pullets do not start to pink up in the comb until they are close to laying age.
In the 2nd to last pic, The black/brown one standing in front of the roo, is also a roo, I think, it has a comb already as well, but compared to the obvious boy, it's comb is paler. So maybe just maybe it turns out to be a hen. (Also one of my fave's)