Newbie with a problem! Two weeks ago (May 19) I installed two nucs into new equipment and have performed only 1 inspection (May 27) - all good. On May 31 I added a top feeder to Hive # 1 which was the weaker of the two and inspected both entrances for activity - all good. Yesterday, 3 days later, I checked the hives (visually) and saw that Hive # 2 (the stronger hive) has some dysentery on the landing board as well as the front of the hive body. The weather has been poor since May 31, with frequent periods of rain. Temperature wise it's been between 15-20 C (59-68F). Both nucs are overwintered with 2011 queens. I'm unsure if the nucs were ever treated for Nosema last Fall or this Spring before I received the nucs - I never asked. Other than keeping an eye on the hive in the next few days/weeks, what should I be doing/not doing? I'd be interested in hearing about late spring dysentery incidents and anything else that could be useful here.