Nighttime Pollinators: Lots of pollinators, such as butterflies and bees, are active during daylight hours. But some, particularly moths, pollinate at night. The flowers of some plants open and are fragrant after dark, which attracts these beneficial insects. There are many human-caused threats to all pollinators, including loss of habitat, use of pesticides, and invasive species. But for insects who are active at night, light pollution is also a major problem; too much light disorients them. Turning off unnecessary outside lights at night helps lots of bird species during migration – but nighttime pollinators such as moths also benefit from having less light pollution. If lights must be used at night, “warm” (yellow) tones are better for moths. And if outside lights are used for home security, consider those triggered by motion sensors, as they will disrupt fewer pollinators than those left on all night.