Standard of Perfection for showing says
Cock 36 oz Cockerel 32 oz
Hen 32 oz Pullet 28 oz
My 6.5 week olds are 9 oz-10.5 oz on the known females and 10.5 oz to 12.5 oz on the guessing males.
Just a note for my experiment,
The two giant chicks from my way too big rooster are at 14.5 oz and 15 oz. I'm sure one is male, the slightly smaller one I'm not positive on.
9-12 oz is about where mine are sitting now at 7-8 weeks old so I guess wow, they are a lot smaller than I thought they would be. o.o For some reason they all look so much bigger in everyone's pictures and video's.
It's the fluff. They loose over half their size when wet