Male grayling butterflies prefer to mate with darker female graylings. When caged with a female grayling and a cardboard cutout of a grayling painted black, the male will choose the cardboard cutout over the female. Beyond being an example of bro falling for an unrealistic standard of beauty, such a preference reveals that even in matters fundamental to survival and reproduction, these creatures can be seduced by artificial models they’d never encounter in nature.
