(Slightly surprising to me that this wasn’t known, or assumed already. Here’s discussion about the paper on the iNaturalist forum.)
When it comes to butterflies, people prefer pretty ones: That’s a problem for scientists.
[Users] underreported many species, particularly those that were difficult to identify and those with light-colored markings on their wings. Behavioral traits, such as butterflies' flight style and height, and traits that make butterflies difficult to photograph, may have affected reporting patterns, the researchers surmise.
