Oh yes, I do remember that also. At the time I read it, I mentioned it to DH and he said he thought it was unlikely to be botulism, though I don't remember now what his reasons for that were.In a note signed by Mr. Ussery, and from the link in my post above: "Please be advised that, despite what is said below about the chances for disease with this system, and despite the fact that I have used it successfully for years, I have recently indeed had problems—including deaths of several chickens—that probably resulted from “limberneck”—that is, botulism poisoning."