I am the proud new owner of 5 Buff Orpingtons and 5 Barred Rocks. They are about 3 weeks old and I'd like some help figuring out if they are boys or girls. This is my first time with these breeds.This is them as a group.
I expect that the little BO which you see the right eye of in the picture is a boy, based on his slightly larger comb and his dominant stance. The one (left eye facing photographer) next to him, I'd expect to be a boy and the two with their heads down and eating are pullets, as is the one by the water. Most of my identifying at this age is based on how they are acting by your 'threat' with the roos being more watchful.
Using those same guidelines, I think I see 3 BR roos, but I think the BR's can be figured out with coloring, and you will probably get a more educated answer than mine.
Of course, at this age, there is room for error in the guessing...