Any idea on the possible breed of this pullet?

[HilsingerFarm]

I had hatched a batch of chicks from a neighbor who has a mix of Barred Rock and astralorpes. This is the only Brown chick that hatched and since it doesn't look like any of the others I'm not sure if maybe there's a different breed mixed in somewhere? It's feet are gray like the other astralorpes.Thanks!

 

[Gray Farms]

There is another breed in the mix somewhere.