Help me find gender of easter eggers or ameraucana

[D.G.]

Please, help me find the gender of my chickens (3 ameraucanas or easter eggers and one cochin).
They have not made any rooster crow.
They have not laid any egg.
I estimate them to be somewhere between 18 and 22 weeks old.
If there is a rooster I need to know before it gets loud to give me time to find it a new home (outside of the city).
Thanks for your help.

 

[AlleysChicks]

Big red with blue green tail is male. Iffy on the white with red across the shoulders.. the other 2 are girls.

 

[Crazy for Chickens!]

Agree.

 

[junebuggena]

Two Easter Egger cockerels, the red and black and the white with red. See how they both have the same shade of deep red through the shoulder? That's specific to males. The other Easter Egger and the Splash Cochin are pullets.

 

[drumstick diva]

X 2 Junebuggena