Golden Sebright...Pullet or Cockerel??

[HendricksonHomestead]

Mine are not laying yet either. Rooster is crowing all day long but no eggs from the 2 girls. Any time now

I asked on another forum if the white egg could be from my sebright, but it seems much too large. So now I'm thinking that egg wasn't from her. So no eggs yet at 7 months old, she's been on laying feed since she was 20 weeks old.
Here are all the photos I got of her this morning, my silkies are twice as big as her. She's hardly got any comb going on lol.

 

[chickens really]

My Sebright lays a tan/ cream egg and it's not any smaller than my Silkies egg.

 

[HendricksonHomestead]

My Sebright lays a tan/ cream egg and it's not any smaller than my Silkies egg.

I'm pretty sure the egg I got wasn't from her, it was the same size as a RIR egg & a barred rock egg.