Is this Columbian Wyandotte a rooster or a hen?

[Outrun Acres]

I have 2 columbian wyandottes that were supposed to be pullets. One of them, the bigger of the two, has a comb that turned bright red as soon as it started to develop. They are about 12 weeks old right now. If this bird didn't have bright red wattles and a comb I would assume that it was a hen. Does anybody have an opinion? I will post a picture of the one I know is a pullet and the one I am starting to think may actually be a rooster. They are both the same age and we bought them both at the same store. These Columbians for some reason seem to be more difficult to sex correctly!

 

[BlueCamas]

Congrats! You have a pair (1 boy, 1 girl), much easier to breed that way

 

[Outrun Acres]

Yay! They were supposed to be pullets, but my husband is excited that one of them is starting to look like a rooster. He really likes the wyandottes and wouldn't mind some chickies in the future. So far he seems to be super mellow too. He acts like all the rest of the hens. I haven't even heard any noise or crowing out of either of them. T

 

[Sk8inChick(en)]

What a cute little pair! They should have some cute chicklets!

 

[blippitydar]

Yay! They were supposed to be pullets, but my husband is excited that one of them is starting to look like a rooster. He really likes the wyandottes and wouldn't mind some chickies in the future. So far he seems to be super mellow too. He acts like all the rest of the hens. I haven't even heard any noise or crowing out of either of them. T

Hi! can you give me your experienced opinion on gender of these two??