Mysterious duck die-off in Idaho, new H5N1 worries

BB reader Jabber says,

This is a story about a massive duck passing (at least 2000 have kicked the bucket so far) in Idaho. Experts aren't sure what is causing the die-off, but they are pretty sure that this is not H5N1. Their theory? Probably a bacteria. However, the main reason I submit the link? On page two of the story is the following text:

"…They said it was unclear why a similar outbreak had never before occurred in Idaho. SIMILAR EVENT IN IOWA LAST YEAR. On Wednesday, officials outfitted with protective gear were gathering hundreds of mallard carcasses…"

Link

Reader comment: Neil says,

CNN is reporting that the mallard die-off was caused by fungus growing on moldy grain like the earlier Iowa incident.