Could my Dominant Coppers be Black Australorp?

[ariri30]

Thought I read brown to light brown. Here’s the coloring I’m curious about. The three I’m getting daily are on left. Light colored ones center and store bought white egg right.
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The lighter color egg is not an australorp but the one in the middle looks like one and the dark one is a marans egg

 

[MarkJr]

The lighter color egg is not an australorp but the one in the middle looks like one and the dark one is a marans egg

Kinda where I’m going with the questions. The dominant copper chicks were at the farm store. I don’t remember black australorps being there.... but the majority of my eggs fall into the ‘not marans’ darkness scale. The sapphire gems and the ‘questionable black birds’ are laying almost identical eggs.

 

[MarkJr]

Marans has feather feet and australorp has clean feet

Dominant coppers are noted to have mostly clear shanks, but can have feathering.

 

[piminuse]

Dominant Coppers are a production hybrid bred from hatchery stock and made to be egg-laying machines. Most dark layers tend to have eggs lighten over the laying season, but if your girls are laying light to start they probably came from light-laying stock. I'm on another chicken forum and people have had wildly inconsistent color results from any of the marans mixes like Dominant Copper, Rustic Rambler and Midnight Marans. Good news is they should still be tasty regardless of color

 

[Carson213]

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what kind of chicken is the one on the right in the third picture? beautiful bird!

 

[MarkJr]

what kind of chicken is the one on the right in the third picture? beautiful bird!

Sapphire gem