I am new to the forum and so glad to have somewhere to go for some information! I just got a male Cayuga that had a prolapsed penis (he could not retract it). We didn't know this before we got him. I researched all I could on the subject and it sounded like the best thing to do was remove the portion that was unhealthy and keep the duck clean and he should heal just fine. Today we performed the "procedure" as cleanly as we were able and the duck seems to be doing quite well so far. He was easily able to retract what was left, and I placed him in a clean well bedded pen with fresh water to swim in. I am a bit worried now about a possible infection for this poor guy. This is not something I have ever had to deal with before. I thought maybe I should get some kind of antibiotic and keep in on hand in case he ends up needing something. I do not know if it would be wise to start him on something preemptively. So thanks to this forum I was able to find out what antibiotics are safe for ducks, but I have some questions. I called a vet supply store and asked if they carried Agramycin. To my embarassment the woman explained that Agramycin is a brand, not a medication itself. She said what I needed was just an injectable penicillin. Is that what Agramycin is? I just want to be sure I am giving him the correct medication if he does in fact end up needing it. Any help would be greatly appreciated!