Bumblebees are still on the wing here and there when autumn days are mild. Being furry creatures they tolerate a certain amount of cold and are generally indigenous to temperate rather than tropical zones. Indeed it is speculated that the Himalayas may be their point of origin.
Honeybees need temperatures of around ten degrees Celsius or more to be able to fly and function. Nonetheless they too will venture out quite late into the year if it is warm enough. The hives at the music school were still fairly active as of a few days ago.
Bumblebees will forage different plants seeking out sporadic flowers e.g. the Borage mentioned in my last entry. Honeybees work species that are flowering en masse; by this point in the year that means Ivy.