Three hens or he's?

Hi all,
We're new to chickens and started out with three rhode island red hens. Then we added five little easter egger chicks to our flock about 4 months ago. The woman we got them from said they were hens. However, at least two of the new "hens" have begun to crow. I'm pretty sure at least three are roos. But could any of you confirm my fears?

Thanks!
These are the three I think are roos:






Here is a picture of the five new ones all together. I'm pretty sure the white one and brownish one in the back are hens. Right??? Lol!

 

Thanks to both who confirmed it for me! Now I just need to figure out what to do with them, lol!