I have successfully raised 8 ducks. I get them in sets of two so I have had some expirence. Three days ago I got two more ducklings and when I got them one of the duclings slept more than any I had before. I kept an eye on it but I didn’t think too much of it but it died the night after I got it. I was very upset and I know that ducklings don’t do good on their own so I made a quick trip and got 5 more ducklings. I was gone for no longer than an hour but when I got back I noticed the other ducking was sleeping a a lot (which it had not done previously) and it ended up dying almost exactly 24 hours after I noticed the tiredness. The ducklings I got the day the first one died all seem to be doing just fine but I am still worried this might be a disease. There was no other symptoms than excessive sleeping. I’ve googled all sorts of diseases and I can’t find anything. Im not doing anything different than I’ve done with all the other ducklings I’ve raised. I would appreciate any ideas. There heat lamp is the right temp and these duckings have the same bedding, feed, and waterer that all of the ducks I raised had and I never had a problem.