When pollinators visit flowers, they produce various sounds, from wing flapping during hovering, to landing and takeoff. Francesca Barbero studied these vibroacoustic signals to develop noninvasive and efficient methods for monitoring pollinator communities and their influences on plant biology and ecology. The researchers found that the bee sounds led the snapdragons to increase their sugar and nectar volume, and even alter their gene expression that governs sugar transport and nectar production.