Same breed?

[stephyan16]

I have two 20 week old chickens, sold to me as Black Australorps. However, the more they grow the more different they look . One of them has a really developed comb and wattle compared to the other. She's also got lighter eyes and a heavier body. I have some pics below of what I mean.

So now I'm wondering if there's a possibility one isn't a black australorp? Or that they aren't both hens?

If anyone's got some insight, pls share!!

 

[StinkyAcres]

It is just individual variation. Those two are so similar to my two French Black Copper Marans. One has almost black eyes and a smaller, duller comb and the other has lighter eyes and a larger and brighter comb.