Besides, if Gritty uses it for a grow-out pen once, those chickens will be there forever. As much as she tries, she can't talk them into packing up and moving to one of the other coops. And she has no runs! She can't lock them in the other coop to get them to move. She'll constantly be needing new grow-out pens.
It can work for broodies to hatch out their eggs, but she;ll probably have to move the broody and her brood to the permamant coop a few times at night to get them to move. I've done that and it usually only takes a couple of times. My broodies have been ready to move their chicks back with their flock. But getting a bunch of teenaged chickens to move out of their house takes consistency, moving them every night for a while. They won't want to move in with the older bullies.
So, yeah, a constant supply of new grow-out pens.
And Imp, I think you missed one, but that's what a community is for, to help each other out. Her last brooder was IN THE HOUSE, not on the back porch. If she gets many more, I'm going to have to take my shoes off to count them all.
