Cream Legbar Slow Growing Rooster or Hen?

[Jojosine]

Ah, genetics. I quite like genetics, so this makes sense to me.

Still, what does 'single barred' look like and what does 'double barred' look like?
Is it to do with being speckled or being plain grey?

Very interesting topic!

 

[LadiesAndJane]

Barred rock pair demonstrating the difference.
Photo from the internet.