He made it through the night and looks much better this morning. He seemed feisty enough to handle the stress of being banana held for a clean up so I wiped him down as he had poop all over his back end. He hollered through the whole thing but wasn't too mad to stop screaming for a nibble of millet. He's on top of his cage watching all the morning proceedings and took a lap around the room. Thank you for all your love and support! It seems like once he passed that black coffee ground poop last night things started to turn around. He had a nice pile of regular poops from overnight. Hopefully this will never happen again.
I just had a thought and maybe this wasn't it, but he chews on his wooden mangrove perch all the time. I wonder if he ate the wood bits...