Butterflies of Southern California

Butterflies of Southern California: A Guide to Common and Notable Species, waterproof guide. •Caterpillars •Seasons •Host Plants Butterflies can be seen feeding on flowers, tree sap, or rotting fruit. Some frequent mud puddles, where they obtain essential minerals, and females are often found near their larval host plants. Many species show up every year, while others can be abundant or absent at times. Wet and dry periods, as well as cold or hot weather, can affect butterfly numbers.