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.
If worker bees collect and store significant amounts of pollen, a colony has no need to seek out alternate protein sources. Honey bees collect pollen and nectar as food for the entire colony, and as they do, they pollinate plants.