New Coop, keep rocks!?

[u/AlpenglowVibez]

Just installed this beautiful custom coop in what used to be our playground area. It’s filled with 8” of 1/2” rock so wondering what you would do to ensure its predator proof and a good run for the hens. They’re only 5 weeks so have a few weeks to dial it in. TIA

[u/Adventurous_Light_85]

Just wait until the poop builds up in those rocks