Too young to sex accurately... butIt may be to young to tell. She also has really thick legs compared to the others
As they grow, my males tend to have stumpy wings while their sisters have longer wing feathers. As they progress, the males may have a porcupine look along the back. Around 4-5 weeks you may see slight differences in pinkish comb & dropping wattles. The changes are subtle.
Yes, I have been tricked more than once. My blk & blue orp hens grow to about 10 lbs (occasionally 11). One gorgeous hen had very dark comb and dropping wattles at 3 weeks. I thought male until 6 weeks when no changes. Her legs are like tree trunks but by 15 weeks I was finally able to admit HE was a SHE. Because of her beauty, I kept & bred her. Now I get more ??? chicks just like her.
Jewel
One of Jewel's pullets at 8 months