Olive Eggers, like Easter Eggers, can look like anything.
I'm speculating based on the coloring and feathered feet, which *may* indicate Blue-Copper Marans heritage.
I'm sorry, he's a beauty, but he looks nothing like a Langshan. :(
Langshans are tall, single-combed birds with a distinctive U-shape.
My Ludwig, coming up on 20 weeks, is only hatchery-quality, but he's from Ideal and they supposedly have the Croad line.
I expect that quite a few breeds...