Well.... 10 layers and 3 boxes here.
I get one hen occupying their favorite box, then another hen hits the coop and sees her favorite box occupied. The one in the box typically screeches and bickers. The second hen then starts egg singing her head off thinking the one in the box will give up. Another comes in, decides that the second favorite is fine, and tomorrow she won’t procrastinate. This has to happen NOW. So second hen doubles her singing efforts because first hen is taking her sweet time and third hen is supposed to wait for her to do her thing. Hen four comes in and realizes favorite spots 1 and 2 are taken, and starts complaining to hen 1 2 and 3 that she needs one of those two spots like NOW. hen 1 screeches no way, hen 3 just stares in a trance. So, hen 4 piles in with hen 3 and starts her ritual. Hen 2 really loses her mind because now 2 have taken cuts. Hen 5 comes in and her favorite box is not occupied. She slides right in. Now hen 2 throws a royal meltdown because 3 have taken cuts. This causes hen 1 and 2 to start singing the song. Hen 6 pops through the door and............
Aaaahhhh the daily coop drama. It’s actually hilarious how much fuss they make over a cubic foot of room. From daylight to mid day, my coop is LOUD. Gave them 3 more boxes that they refuse to use.