Five of my Six ducklings died suddenly (2 Pekins and 3 Mallards). Terrible – Healthy and bouncy all day then all 5 died within an hour. All the signs of Duck Hepatitis Virus - lethargic, lost balance, paddling spasmodically, and died within minutes of symptom onset. Several had the typical opisthotonos. We had bought them about 24 hours before from Tractor Supply. I called Tractor Supply right after our babies died and all their ducklings were just fine. Any other theories of what may have killed them? The ducklings had never been outside and were using the same bedding and food being used at the Tractor Supply. Anyone know how DHV could have been transmitted to our ducklings an isolated brooder? Could our spring water be the culprit? We live very near a river with many wild birds (Mallards, Muscovies – wild and domesticated, Heron, etc.). Our spring water is untreated, but has proved very clean in recent water tests. The spring is fenced too so no birds would be in that water. I don’t want our poor lonely last duckling to be alone. I’m hoping she lives. I also don’t want to bring anymore home if we’re making them sick somehow. My 11 year old is heartbroken and so am I, Any suggestions? I’m new at Ducklings….