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.
Mostly insects and seeds. Insects make up close to two-thirds of annual diet, with caterpillars the most important prey in summer; also eats wasps, bees, sawfly larvae, beetles, true bugs, scale insects, and many others, including many insect eggs and pupae. Also eats some spiders, snails.