Mystery Chick with my White Marans?

[BlackSheepWhiteFeathers]

My order of White Marans came today, and I got an extra black chick with a reddish brown/copper colored head, it has feathering on its legs and the larger wing feathers starting to come is a golden/reddish brown color with black tips.

Can anyone help me out of what breed this is?

 

[Abold87]

Could it be a partridge cochin

 

[BlackSheepWhiteFeathers]

Looking at the hatchery, it seems to be one of the darker colored chicks from the Buff Brahmas, I’m excited— she’s the most adventurous and brave of them all, and is always doing comical things for me and my 5 year old and baby to watch and laugh at, we love her so much, I really would like to get some more in the future! Who knew Brahmas would be so fun?!