What breed is my little chick?

[Stormstar]

Hello all new to all this I was given 3 eggs to put under my broody Barnevelder.
Well we have one lone survivor who I have no idea what breed He/She is?
Photo taken at one day old, and at three days now I have noticed proper little feathers coming on it's wings.

 

[questions543]

Cant tell from the pic if there's a spot on the back of the head but if there is it' s either a barred rock (probably pullet) or black sex link (%100 male) if there isn't it's an australorp. Of course it could be a rarer breed like black jersey giant or a mix but those are my guesses

 

[Stormstar]

It has a splodge of yellow to one side of head towards back and a second smaller splodge on the otherside towards the front . Thanks for your suggestions. Main thing is It's alive and well.