I have a hive that has struggled with chalkbrood. Last year it seemed to have cleared up and I had no more mummies appearing on the slider. It started producing excess honey and all seemed well. Then a month ago I pulled out the coreflute slider and saw a lot of mummies again. I cleaned that up- and replaced it. Then today I had a look and there are mummies: but there is patch of dead fully formed bees too. The bees mostly look small sized- unusually so. What’s going on? Any ideas?
I am not sure if the bees pushed these dead bees through the screen- or if the bees entered at rear and died for some reason. The coreflute is in the lower slot and bees do tend to hang around in that space a bit.