Grandsons went home shortly after 5, chatted with the Hubs a bit, headed out to do my barn thing. Merlin was napping on the patio, I asked "where's your brother." Then realized the barn door was closed!!! Slid it open & there stood Pippin, I'd woken him from a nap so he wasn't to stressed. He'd had hay nets, and I keep their water trough inside as well (Merlin had grass & puddles). Six piles of poo though so, I know he'd stressed a bit, he's not one who enjoys his alone time. I have a feeling however that Merlin did, hopefully he doesn't realize now he can be rid of his pesky brother by sliding the door shut while Pippin is in there. Not even sure how it happened, guessing/hoping Merlin didn't do it on purpose!
I'll be more aware now when I see either all alone for any period of time!!! Bad human.