Hen or Rooster?

[John77]

I am new to raising chickens. We currently have 7 chickens that are 5 months old. I have noticed some features on the barred rock, and a Rhode island red that I feel that I have 3 roosters in my flock. Can someone tell me if my assumption is correct? I have uploaded some pictures.

 

[candyNflowers]

which features have you concerned? seems the experienced people on here prefer a top view, natural side stance view and a view of the comb to help identify the sex as well as looking at tail feathers. I am not experienced enough to help. sorry.-lisa