1 yr..no eggs..sigh

[CAZ3126]

so I got 3 hens which were born 1 day after the other, just as there momma laid them (if you see my other post, its the black cross, and white leghorn). Anyway, the 3 of them are 8 months old, but 2 of them have been laying since 22 weeks of age, the 3rd has never laid an egg, but she keeps trying it seems. She goes into the position to lay, but never does, so I'm wondering if something is wrong. Does anyone has experience with this sort of issue?

 

[nuthatched]

She might be a dud.