rooster or hen?

[chickensss]

ok so I have 7 hens(we think), and 1 rooster(we think). so it's obvious that we have a rooster already, he has shiney feathers, huge comb, crowing, ect. but, my mom thing we have another rooster bc it's growing a larger comb faster than the other hens. so, I'm just asking some experts to prove my mom wrong! lol, pics below..


so here's the hen(mom thinks is a rooster)

and here's our rooster

 

[chickensss]

and btw they r about 4 1/2 months old

 

[iwiw60]

Top pic...HEN
Bottom pic...ROO

 

[ShockValue]

Notice the shape of the feathers between the top pic and the bottom pic. Top pic (hen) has rounded hackle and saddle feathers. Bottom pic (roo) has longer pointy feathers in those areas.

The hen is just maturing a bit faster than her sisters. My girls did much the same.