Can someone tell me what breed my 3 month old rooster is?

[JadeFarms]

I agree with barnevelder. It will look more like a barnevelder the older it gets.

 

[ChristinLewin]

Yup Black Barnevelder

 

[Jedstar]

He looks only young and if you look closer he's starting to get the Barnvelder colouring. There's about 3 different breed of Barnvelder colours. On his wing he's starting to get the patern

 

[ChristinLewin]

I’m willing to bet he used to look like mine:
7 weeks old

1 week old: