that's a great idea - the sides are completely open right now and there is plenty of air flow through it for the bottom floor. there is definitely some space between the side panels and around the top - it's not airtight by any means. my biggest problem is what to do with them at night and how to keep predators out.
i lost some chicks last night - i forgot to shut them up into the top and something dug under the coop and took them... so i'm on a mission today to figure out what to do.
here are some options - i'd love to hear your feedback:
per your suggestion, i could use hardware cloth to cover the ends of the second floor, that would give them plenty of air when i shut them into the second floor - but when they start laying in a few months, that would make egg gathering difficult - the nest boxes are on the ends and the doors allow access.
i could also leave the ramp down 24/7 so there is air flow up from the bottom - but i'm worried that predators might climb in at night.
i could put hardware cloth across the bottom, but i really want them to be able to forage and scratch the ground on the bottom of the coop - wouldn't this prevent them from doing that?
how about this - what if i put a flat-on-the-ground border of hardware cloth around the outside perimeter of the coop? it won't look as nice, but it would prevent other animals from burrowing under. my only issues with this are the aesthetics and the ability to turn the coop on it's side for cleaning, etc...
thoughts? thanks for all of your comments!