The worms, according to Mike Johns, set up intestinal and liver problems and lower the immunity of the bird , so that secondary problems arise and the bird cannot digest food.
The bees build up a store of honey during the summer which they eat through the winter. Beekeepers will take a surplus of honey from the hive, but won't take all the honey there is. They also feed the bees with sugar syrup after taking the honey to make sure the bees have enough to see them through the winter. Honey.
In order to keep shivering, the bees must have enough honey. This is how they get their energy. One of the most important jobs of the beekeeper in the winter is to make sure the honey supply stays full so the bees can keep shivering.