Has anyone heard of "Greenes". What causes it?

[windy69]

Chickens have no power to stand and are just sickly. We know we can treat them with fish cycline, but you have to catch it the first day of it, because the end of day two they're DEAD. We quarantine the ones that act this way.

 

[seminolewind]

It may be coccidiosis and they need treatment ASAP with Corrid. That would kill them fast, and that's the most common reason.