help with sexing chickens

[jschaffer]

first pic i think the BR is a hen just because of the comb not sure about the ameraucana in the background the secound one the 2 BR and the ameraucana not sure about any help the BR are just about 3 months and the ameraucana are a week from 3 months thanks for the imput and takeing the time to look

 

[gamebirdsonly]

The top pic the BR looks to be a hen the Ameracauna to left looks like a roo. can't tell on the brownish one
The second pic.Looks like A BR roo and hen and the closet Ameracauna looks like a roo

 

[Farmer Viola]

The barred rock in the second photo is definitely a roo, I have 4month old females who have nowhere near that size comb and waddle, so that's enormous for 3mos.. I can't say for sure on any of the other ones with those photos.