He or she...what will it be?

[FiedlerFamChicks]

None of these sweet chickens have found their voice yet so I need help with determining if they are hen or roo.
Olive eggers- 12 weeks old
Silkie- 14 weeks old

 

[Insnesnakos]

The first one looks like a cockerel, how old are these chickens?

 

[FiedlerFamChicks]

The first one looks like a cockerel, how old are these chickens?

The Olive eggers are 12 weeks and the silkie is 14 weeks.