Peter added thymol to all the hives (this is a natural protection against varroa destructor).
We have not yet started feeding the hives with sugar solution but we need to get this done soon. All the hives have nice supplies of honey and pollen (and brood) so they look in pretty good shape for the winter. one of the hives (#2) seemed to have a lot of drones but it is possible that they have not yet been "purged" from the colony. The workers destroy the drones before the winter and the hive stops producing drone larvae..