Brewers yeast should be enough for your ducklings. I wonder if they ate something toxic while foraging. If you cannot get to a vet, I would keep them inside the coup/run rather than let them free range and continue supportable care (electrolytes and encouraging them to eat with nutritious...
What are you feeding the ducklings? Are you using the same starter crumbles as your chickens? Are they pekins?
I doubt your ducklings have guardia. I certainly wouldn't treat for that without stool testing. Green stool is more likely from what the ducklings are earing. Are you adding chopped...
What type of ducks do you have?
I had a rescued female muscovy who was thought to be male and was named Max, as she grew so fast. But she stopped growing at 6 weeks and started babbling female fashion.
I also have a rescued muscovy drake, Daffy, who I thought was female as he was smaller than...
My last introduction was see no touch for 4 weeks before I let them together. The new one was bullied to establish pecking order for weeks and now after 4 months he is not just a dab hand at avoiding being pecked, he is building a relationship hanging out with two of the muscovies.
The last...
Epsom salts, magnesium sulfate, is great for soaks but don't let your duck drink the water. It's best to use table salt, sodium chloride, for cleaning infected wounds/eyes. I use 1 table spoon table salt in a cup of clean water for wounds; I use 1 tea spoon in a cup of boiled and cooled water...
Or weigh one!!! My pekin drakes have weighed only 7lbs. I always think of them as poor thin boys [compared with my great fat lumps of muscovy drakes]. My son's pekins are mostly a little larger than a female muscovy. His crested female is smaller than the others -- the same size as the...
There will likely be side swipes biting as they pass eachother. There may be chasing: I stay with the chase as that can end with one drake standing on the other to exert dominance. Standing is OK in my book as dominance demonstrated generally reduces pecking order behavior. But when one drake...
I thought it was just my boys that were stinkers! I have one muscovy drake that bathes daily, two that don't bathe voluntarily and a pekin that was in water all day in his own wading pool when he was see no touch but stopped bathing the moment I took the temporary dog pen down and let him loose...