We now have so many butterflies migrating through Colorado that they’re being picked up by weather radar.
Two weeks ago, I wrote about the influx of painted lady butterflies being observed in the Denver metro area. This week, Coloradans noticed strange bursts of color on the National Weather Service’s radar maps. After some investigation, NWS determined that the unusual signatures were caused by migrating butterflies.
They added that while it’s common for migrating birds to show up on the maps, it’s rare for insects to cause this kind of radar activity.