Second time further opinion

[Barry42001]

So the only breeding roo at time eggs were incubated was the black austrolorp. This next pic is the roo fathered by the austrolorp. Either Rhode island red hen or buff orphanington. Previous pic was several weeks older.

 

[TwinsLoveChicks]

I'd think Buff Orpington because of the light on his shoulders.
He's very pretty!

 

[junebuggena]

The Australorp is not really an Australorp. He's got yellow skin. Which means he's either a mixed breed or a Jersey Giant.
The cockerel could not have a Buff Orpington for a mother since he has yellow skin. The white skin of the Orpington is dominant. Also the Buff color is very strong when paired with other colors and tends to produce more coloring when paired with solid black.
The cockerel is also lacking the Mahogany of the Rhode Island Red.
My guess is that a black sexlink is the mother of that cockerel.

 

[Barry42001]

Never noticed color of austrolorp legs hen austrolorp all have black legs never really looked at his. Did notice his spurs lol

 

[junebuggena]

Never noticed color of austrolorp legs hen austrolorp all have black legs never really looked at his. Did notice his spurs lol

It's the undersides of the feet where skin color is seen the easiest.

 

[Barry42001]

Yeah that's interesting the rule is going through his first molt and your are white feathers coming in not a lot but more than an austrolorp should be having