rules of thumb..

My best friend has EEs and I concur. Super hard to tell! With other breeds I can tell sooner. My Blue Americauna Roo I called at 2/3 weeks. I honestly think it just depends on the bird. Some like to keep us guessing.

 

Comb. At this age, pullets will have a pretty non-existent comb, and what they do have will be a fleshy pink. Any red color is male. At this age, three defined rows on a pea comb is going to be male.

Color. Your prettiest birds are usually roosters. Seriously, non-chicken folks can usually pick a cockerel out of a group of birds, and they'll always say "that's the prettiest one!". The flashy coloring, red patches on the wings or body or otherwise very colorful birds are male.

Leg thickness. Not a complete indicator, but taken as part of the whole package can lean one way or the other. Pullets have thin legs, cockerels have thick legs.

Overall look. At this age, pullets are still kind of leggy, but the cockerels are usually a bit taller, and look gawky and unfinished.