If you notice the chicken just below Rosie, you'll see a piece of lettuce on the ground. This is what's left over from the frenzy that occurs twice a day in the brooder. I have a couple of rows of lettuce in the garden that have turned a bit bitter with age. In the morning and afternoon, I stuff two suet cages with wet lettuce and place them at either end of the brooder.
This is Anna Elizabeth taking ownership, briefly.
And here is an Americauna - not sure which one, running away with a snagged treat. She is making such a racket that in seconds, others will abandon the suet cage to give chase. Damerow, in the Storey Guide to Chickens, calls this Tidbitting, apparently a way to shred whatever a chicken might have, making it easier to eat.
But what I find unusual is the stupor the birds seem to fall into once they finish the lettuce. You'd think it was an afternoon drink!
In this picture, I disturbed them when I opened the door, but you can see the others peacefully roosting at the end of the brooder.
Close-up - note Ruthie is facing the opposite of the others.
It's early in the afternoon for them to call it a night. I call it the lettuce stupor, induced by the fresh afternoon treat.
Anne at Echo Mountain View Road chickens