Last night, same old routine.
Went out to check on the Girls. The Littlees were huddled in the nestbox. As (has now become) usual, I gently posted them on to the roosting bars. There was a lot of grumbling from the Bigees, and Delilah got up. This time, I growled at her, and warned her that if I saw even ONE attempt, she'd be in the Eglu as fast as my arms could carry her.
She glared (yes, chickens can glare) at the Littlees, then she moved so that Scarlett was between her and the Littlees. Then Scarlet stood up and glared at the Littlees. I gave her the same warning.
All four girls settled down, although I wasn't sure it would last.
A couple of hours later I went out, and found that Jasmine had gone back into the nesting box. I gently popped her back on the roosting bars.
Just before (my) bedtime, I went out again, and all four were still on the bars. "Yay!"
I'll try the same thing again tonight...but the Eglu is staying put, just as a reminder.