I've had ducks for 2-3 years and just got my first ducklings. They immediately came down with an upper respiratory infection. A little sneezing, clear liquid draining from nostrils, their little eyes look "mangy" (if they were puppies), and two seem to have a swollen sinus. I keep Storey Guide by my bed! It recommends Tylan which I have used in the past for pneumonia for pigs in our sanctuary pigs. But I want to be sure it is safe for ducklings and if I mix it with water per label instructions for ducklings. The ducklings are growing, eating and drinking well, so I am optimistic for their overall well-being. I am also keeping them away from our other ducks in a quarantine area (and since they've gotten sick, I am so glad I did!). I take care of the other ducks first, and then the ducklings last to prevent spreading the problem. Anything else anyone would recommend? One other question. I have a drake and hen Khaki Campbell. These little ducklings are female Khaki Campbells. I would like to merge them in with the other pair. My plan is once they are well, grown enough to have feathers so they don't need a light for warmth, etc., is to put them in a smaller pen within the Khaki Campbells' larger pen, and let them get acquainted for a couple of weeks. But I don't know if merging new ducks works as it does with dogs and if there is a better way to do this or if the two groups won't mix. My Khaki Cambells and Runner ducks are two completely separate flocks and no way they would ever integrate into one. Thank you.