Is It a Roo!! Help!

[chick peeps]

I currently have two Buff Orpington chicks that are 3 1/2 weeks old. I bought them locally from a group of straight-run chicks, I was hoping to get two hens but I think one of them is a rooster. Though I'm not sure.
Chick #1 is small and is a very light brown color and her tail feathers and wing feathers have developed really well.
Chick #2 is larger and is two or three shades darker than Chick #1. Chick #2's tail and wing feathers have hardly developed and his comb is starting to turn pink/red.
I really need to know soon whether its a girl or boy so I can get another hen if its a rooster. Please help!

 

[KieksterChicken]

We really need photo's posted of the birds you are wondering about in order to determine sex.

 

[iwiw60]

Uh, your pics are missing....pics, please!

 

[chick peeps]

Sorry, I guess it didn't work
Chick #1



Chick #2

 

[hdowden]

they are really to young to tell gender on

 

[Cyan Night]

It can be difficult to tell gender with orpingtons, so I would wait til they are about four to five months, unless one crows before then. I'm thinking your second one might be a boy though