Pullet or Roo?

[Padfoot417]

Hey all,
So I got some Rhode Island Red chicks from Tractor Supply.
They're a little over 3 weeks old now,and I'm wondering about one of them.
All of them look exactly the same of course,but Shadow is making me wonder.
She has different feathers,darker and silkier.
Her tail has black in it already.
Her body is slightly smaller and so is her head.
I don't know if I'm dealing with a rooster or just a different looking pullet.
Any help would be appreciated!!

 

[TheRookie]

Ours are 5 weeks old but we could tell our two roos around 3 weeks. If it was a roo, the comb would be much redder and more developed. I vote pullet.

 

[JerseyGiantfolk]

I'm going with pullet also.

 

[BlueCamas]

Looks like a cockerel to me! Only a cockerel would have a comb that big and already pinking up at 3.5 weeks old. He even has little wattles coming in already.

 

[wildcat chix]

Pullet - yellowish comb, no saddle feathers yet, don't see wattles either