Looks like a boy to me.
Sexing Buff Orpingtons - Page 6
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Can I jump in here too?
I got six BO chicks on February 26. The (shady) guy I got them from is confident that pullets will have feathers over their backs much earlier than cockerels, and has assured me mine are all pullets. A couple seem to be bullies though, and flap their wings at and go after some of the others. They're slightly different sizes, so I'm thinking they hatched out kind of staggered and some are older than others. Some have combs that have pinked up and stood up a little, but not huge. Is this back feather thing a load of hooey?
I don't have a great picture of them right now, they never hold still!
I have several 5 week old orpington cockerels right now & they all have big pink combs. Totally different from yours! Looks like you got girls!
This picture was taken a few days ago. Marshmallow on the left, Matilda in middle and Rainbow on the right