Is this a rooster?

[Boymama3]

Hello! I got five Brahma chicks from Tractor Supply and was told they were all sexed and they were all hens. I got them when they were maybe 5 to 6 days old and they’re about five weeks old now. But I am really thinking the one with the comb and waddle that is more red is a rooster. He has the temperament of a rooster as well what are your opinions?

 

[fluffycrow]

He's definitely a cockerel.

As far as the others go, it's unclear. They don't have anything on them that would point towards them being cockerels, but update in a couple weeks when it'll be easier to determine their gender

 

[Mantisquailman]

Roo