What happens to the bees in the non flowering season?

Answer 1

To answer this, I am going to have to split bees into two groups: honey bees and all others.
Honey bees do not hibernate but remain active through the winter, however if it is too cold they will not fly outside the hive but will cluster on the comb generating body heat by vibrating their flight muscles to keep warm. The queen will slow her egg laying right down, or even stop for periods. As the weather improves they will take advantage of warmer periods to go foraging, and the colony will start to build up again.
Other bees (and wasps) work on an annual cycle. Young mated queens hibernate over the winter then in spring they feed on nectar from flowers and start building a nest and lay eggs. As the first larvae emerge the queen feeds them and looks after them. When the first workers emerge they take over all of the queen's tasks except for egg laying and the colony builds. In late summer, drones and new queens will fly off and mate. The newly-mated queens find a place to hibernate over the coming winter and as the cold weather comes the rest of the colony, including the old queen, will die.

Answer 2

Bees are angry in the fall because there are less flowers in the fall,No flowers no nectar,No nectar no honey.Honey feed bees.

Answer 3

They hibernate