Roos or Hens?

[WeRnew2Chicks]

I was wondering if anyone can shed some light on whether my buff orpingtons are roos or hens. They are 5 months old and none of them have crowed or layed eggs. One seems to be the agressor so I thought he may be a rooster, (he is Penny, 1st pic.).
I am thinking the others may be roosters also (but I am hoping they are not). I am new to chicken raising and out of 17 chicks that I bought, only 5 are hens (well I bought 6 that were supposed to be sexed as hens and only 5 are hens). Let me know what you all think. Thanks, Michele







Picture 1 and 2 are Penny, Picture 3 is Penelope, and Picture 4 is Henny.

 

[Eggcessive]

Those look like cockerels to me. Note that the saddle feathers (in front of the tail) are pointed in the male and rounded in the female.

 

[sourland]

All are roosters, and the other two birds in picture # 3 are also roosters.

I'm amazed that they are not crowing.