Honeybees can be managed in hives because in nature they congregate in tree cavities, but 70 percent of wild bees nest in the ground, often as solitary insects or as a congregation of loners: Think of an apartment building full of singles. Maybe as many as a third of bees evolved to feed off a given flower or flower family. The others are generalists and will devour whatever nectar and pollen is around. – Adrian Higgins
