Speckled Sussex - hen or roo?

[mamma3]

Hi everyone!
We got our very first chickens (speckled sussex) a few weeks ago and they are now nearly 5 weeks old. We have 4 of them and one of them I'm starting to suspect is a cockerel. It's comb looks much bigger then the others. Any thoughts?

 

[nanahogs]

Rooster

 

[PirocaKeeper]

Looks that way to me too.

 

[Chicken Girl1]

Sorry, but it's a cockerel.

 

[Wyandottes7]

Cockerel.

 

[BantamLover21]

It is a cockerel.