A recent study by plant biologists at the University of California, Santa Cruz, challenges the traditional view that flowers in higher elevations evolved to attract hummingbirds due to the absence of bees. Instead, the research shows that hummingbirds are more efficient pollinators, delivering more pollen per visit than bees, even when bees are still present in these environments. The study focused on two closely related species of spiral ginger in Costa Rica, revealing that while bee-pollinated plants received more visits, hummingbird-pollinated plants received significantly more pollen per visit. This indicates that hummingbirds play a crucial role in the evolutionary transition of flowers, leading to changes in flower morphology, such as becoming smaller and tubular. The findings suggest that evolutionary shifts in pollination do not necessarily require the decline of one pollinator group but can occur through efficiency advantages. The research emphasizes the importance of considering pollination efficiency in understanding plant evolution and highlights the significant ecological role of hummingbirds in tropical ecosystems.