Hen no longer roosting?

[aart]

I'm afraid she can't get up there bc of room, even though there is a whole other roost bar behind the one they all get on.

Yes, they need wing spreading space to get up there.
It's hard to see just where the roosts are in relation to distance from the wall.
Is the highest roost close to the wall(how many inches away from wall)?
Same with 'behind' the main roost (circled in red).
How long are the roosts?

 

[Sycamore Hill Chicks]

That's what boggles my mind! They let her eat/drink hang out with her fine. But yes, we can try another roost. Sadly and crazily? I think the bantam (I know it is) is the bully. But the ISA is a bit timid overall so it makes sense.

Hmmm. Mine usually squabble a bit before bed and then settle in. Maybe it is roost space