Australorp? Jersey giant? Something else??

[Moose Antler]

Its me again, but this time with chicks from a bin marked assorted brown egg layer. I know what I WANT them to be, but what are they? What details can I lool for to help differentiate between breeds of all black hens? They are all the same age, but one chick is much larger than the other two, and one of the smaller chicks just won't fill in feathers on her chest. They are just at 2 months old.

 

[Acre4Me]

BA and BJG: single comb, red earlobes, slate legs.

BA: bottom of feet are fleshy pink.

BJG: bottom of feet are yellow. Build is broader/ larger.

hard to see much distinction in your pic,

 

[Moose Antler]

BA and BJG: single comb, red earlobes, slate legs.

BA: bottom of feet are fleshy pink.

BJG: bottom of feet are yellow. Build is broader/ larger.

hard to see much distinction in your pic,

My best attempt at foot pictures. Was able to get the big one and the not quite feathered out one:

 

[Acre4Me]

My best attempt at foot pictures. Was able to get the big one and the not quite feathered out one:

I see yellow in first pic, but fleshy/pink in the second one.