2 australorp chicks- started same size, now one is MUCH bigger!

[Kenberg]

I got these 2 black australorp chicks a couple weeks ago. They were the same size with similar feathering when I broight them home. Now 2 weeks later, one is MUCH larger than the other with significantly more feathering.

Chick labeled #1 in the photo: could she be a he? Or should I be worried about stunted growth?

Chick labeled #2: based on size and feathering how old would you guess this chick is?

I know australorp pullets develop feathers faster than cockerels but this seems extreme. Thoughts?

(I know the photo isn't the best but DAMN do my 2 bantams fly right out if I remove the fly topper I built to keep them in )

 

[U_Stormcrow]

I am TERRIBLE at sexing birds, but have you considered cross-posting here?
Also, its mid day for much of the nation, answers may be delayed somewhat

 

[Kenberg]

I am TERRIBLE at sexing birds, but have you considered cross-posting here?
Also, its mid day for much of the nation, answers may be delayed somewhat

Cross posted! And yes I know it's midday I don't need an answer ASAP