Comment: Just to be on the safe side

(See in situ)

In reply to comment: Again, I'm no expert, but... (see in situ)

Just to be on the safe side

we began supplementing their honey stores with sugar water in early March, which most of the hives tucked into. Most of the hives seemed to be weaker, but OK, but in early May they rapidly petered out. Then we looked into the hives and found that all of the (one year old) queens had died, and there was no new brood. There was actually some honey left over. No sign of disease, but a lot of dead bees.