Buff Orpington 18 weeks 1.9Kg. Nice confident calm bird but not quite as people friendly as my Barred Rock(also 18weeks).
She is actively vying for high level pecking position(2nd or 3rd) with barred rock, frequent chest bumps.
I think my NH(19weeks) might be in 2nd but she is so confident and calm I can't tell, she doesn't mess with anybody and they don't mess with her. (Except for my old hen who gives everyone a daily peck for good measure.)