Is this a roo?

[FreckledFourCoop]

I hatched 6 seramas on 2/24 and I’m stumped on this one. The other Roos in the group developed crazy fast but the other pullets have no combs so is this just a late bloomer roo like I’m thinking? It hasn’t crowed once but it’s two brothers crow none stop.

The first 2 pics are the chick in question. I added the other siblings to show the development.

 

[MysteryChicken]

He's a cockerel, just alittle slower growing.

 

[Party_Chicken]

Late developing cockerel

 

[fluffycrow]

Cockerel

 

[Yard Farmer]

Cockerel.