when do roo's start to act like roo's? PICS

[Wendy'sChicksRock]

I have 2 17 week old roo's ( well whom I think are roo's ) and I have seen no sign of roo -ish behavior yet.. I have one hen that is laying out of 8 and they are all the same age.
here is a couple of pics.. roo's right?

# 1 russel

#2 Randy


#3 Russel again

BOTH

 

[ndemerly]

I recently learned that with barred rocks, the hens are darker than the roosters because they carry both chromosomes. Hope this helps!

 

[Dixiedoodle]

They look very much like my hens at 18weeks old..

 

[midd2005]

i see sharp pointy saddle feathers on the butt end of their backs. that and their lighter hue say roo to me. but i'm new to this so best to get confirmation from some pros.

 

[dee88]

Pic #1 looks like a roo

 

[Wendy'sChicksRock]

They are both roos I'm. Just wondering at what age do they start acting like roos?