I'm going to wager that's what it was, the state agri animal disease board found nothing in my water supply. But it's odd that this would start happening once they were so old. They were over a month old at this point.
They were split between two brooders with the larger birds being separated to keep them from trampling the little ones. Two heat lamps, had plenty of grit in the form of granite and limestone sand. I've never had a problem giving my ducks greens like spinach, peas and lettuce as a big part of...
I bought 35 ducklings at the beginning of the year because, well, I love ducks and miss my flock. A mix of breeds: khaki, Swedish blue, Rouen, etc. I had them for 4 weeks, lost three of the littlest, the rest of them growing really well. Fed a mixture of chick starter, seeds, ground up green...