'They' say wyandotte females feather up and develop wattles faster than boys. I think these 2 are the only girls I have out of 10 chicksWhy would those make him female? Wouldn't they be signs of a boy? This much wattle and comb at 12 weeks is a definite boy.
On the first three, the coloring tells you all you need to know, IMO, backed up by GIANT rose combs for 12 weeks. If they were single combs, I'd agree, but those are the size that many adult wyandotte hens have.Can we see their saddle feathers ? Combs can be misleading