Flowers use 'blue halo' to attract pollinating bees: Study
Researchers have found that several flower species have evolved the ability to project an invisible "blue halo" in the ultraviolet spectrum to lure pollinating bees. Previous studies have shown bees are attracted to pigments, odours, and petal shapes. Flowers lacking UV spectrum pigments were found to arrange petals' molecules to produce the halo from reflected sunlight as an alternative strategy.