Butterflies, so goes the common wisdom, like flowers, so if you want to attract them you plant flowers that they will like. But butterfly enthusiasts point out that some butterflies prefer “mud puddling”: they are attracted to mud puddles, and like to hang out there.
Carol and I went for a walk in Purisima Creek Redwoods preserve. In places the trail was still damp and even muddy, and in one such place, on a boundary between chaparral and Douglas fir forest, I saw an Echo Blue fluttering along. The trail wasn’t exactly muddy, but I guess it was damp enough, for the insect would light every now and then, put its wings up, and bask.
When I got too close, it unfolded its wings, revealing its attractive bright blue upper surfaces, and flew quickly away, staying close to the trail. I never once saw it go near a flower; so simple observation happened to disprove a stereotype generated by common wisdom. On the other hand, sometimes common wisdom is right. A little further down the trail, a Variable Checkerspot was energetically seeking out flowers.