What breed are these chicks?

[hilltop ranch]

My wife picked these up as pullet chicks but I'm not sure which ones are the black sexed links, australorps and the black moran?

For some reason the little 2mth old Americana takes to them like they're her babies

 

[hilltop ranch]

 

[Peep_Show]

We'll give it a shot here. In the first picture the two yellow-headed chicks in the left-hand side appear to be young Australorps, the black ones behind the brown hen are the sex-links, and the one pecking the red chick in the second photo looks to be a Marans. The Marans should have little featherings on its legs. The Australorps will shed out all black with a green sheen to them (often described as beetle-like). The sex-links may develop some gold feather penciling on their necks but will be predominantly a flat black color.

 

[hilltop ranch]

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[hilltop ranch]

 

[hilltop ranch]

Thanks helps alot