We've had Two deaths in two days! One 2 1/2 year old female Indian Runner, one 2 year old Pekin mix Drake. Two weeks ago I bought the drake from our local feed store and introduced him to our flock of 10 female ducks, and a mated pair of Ginny fowl. We took our time with it but he had been fully accepted into the fold within a few days and everything seemed totally fine. We let our flock out of the run at first light every morning and let them wander the yard all day. On Sunday, we noticed the IR girl acting a bit lethargic, but nothing too concerning until I went to put them away that night. They were a bit far from the run and as I was herding them home, she just sort of gave up and sat down. She let me approach and pick her up, so I carried her to the run and put her in with everyone else. On Monday morning she was dead. Then today I let everyone out and all seemed normal again. Until about a few hours ago when we noticed the Drake huddled alone, away from the flock and shivering. When approached, he tried to move but struggled, flapping his wings and not really using his legs much. We picked him up and examined him; no cuts or visible signs of injury. We put him in a bath to swim for a bit and then left him in the sun. About an hour later he was dead as well. What is going on here and what can we do? My husband and I are terrified for the rest of our flock, racking our brains trying to figure out how to proceed and if it will effect anyone else. Could they have gotten into something poisonous? If so, what can we do now? Or did the Drake perhaps introduce some disease to our flock? We are still getting a ton of eggs, so I'm hopeful that's a good sign. Does anyone have any ideas or suggestions?