My other birds released the 5 survivors from the integration pen yesterday evening, knocking the lid off despite the bricks.
They are mingling fine with minimal harassment.
I was able to get a really good look at them tonight as they roosted on the edge of their pen -- and a few photos that I can't upload right now because of my very slow internet. I have 1 Delaware, 2 California Whites, and 2 SLWs left -- one of which is single-combed (normally a flaw, but what I wanted for my Silver-Laced Australorp(ish) project).