> How can you tell the age of Barred Rock chicks?

How can you tell the age of Barred Rock chicks?

Posted at: 2014-11-15 
They have their primary feathers in and look to be either dominique or Barred rocks these little fellows are at least 3 months of age maybe 21/2 months how fast they grow.

We got these chicks about 3 weeks ago maybe. We didn't know the exact age they were. Were now wondering. Also wondering gender but we hear we won't know until they either crow or lay eggs. We think they might be maybe 5 weeks old but not sure. Anyone know?