Hello, I'm new here! We bought our first round of ducks in June 2024 (5 Indian Runners, 1 Aconia). July 2024, we bought 8 Cayugas - about 2 weeks later, we bought 4 more. Not sure if this is important but we bought the Indians & Aconia from one store, all the Cayugas from another. Now, the reason for this post - we keep losing Cayugas. The only sign we get is they start limping. We're now down to 6, and found another one limping this morning. Typically, we notice the limping and within 1 - 2 days, it's dead. No other signs / symptoms that we've found. The Indians & Anconia are still happy and healthy. What could be causing this??