Fuzzy bumblebees, like tiny orange sheep, flit between the lilies that blanket the understory of an Argentinian forest, fertilizing the flowers and getting nourishment for themselves. In an ancient hay meadow in England, dance flies — looking more like bulky mosquitoes than ballerinas — hunt for blossoms with pollen, ignoring the nectar-rich flowers nearby. On a rocky island in the Seychelles…