Chickens on new perch

So here's the new perch I built. Some like to sleep on the top shelf.  The one on the button is not a perch but a support rod. Omega is not supposed to be there because she can get pooped on by the top shelf. Sigh. She's the only one that still won't go in at night and doesn't know how to get up the right way. These are all my chickens. Starting from top shelf.
Espresso, Gamma, Henrietta
Raptor, Zucca, Mocha
Omega