What's this? Regurgitated worms?

[emandkel]

Found this on my feeding rounds this evening ... dead worms in a pile ... I moved them a bit from where they were before this pic was taken.

Did he regurgitate his worms? Or could it be undigested worm he pooped? I don't think it's the latter, as I found some true poop I think the day before.

He didn't want to eat tonight.

Any ideas why this happened? Is there anything I should do for "treatment"?