Spring in Houston is an intensely visual experience as the grass now nourished by rain and sun turns from brown to green. Flowers are blooming in unexpected places while birds of all shades of color return to take up residence in the surrounding trees. Everything looks and smells a little…fresher. Come Spring, Houston’s bird population as well as its amphibians and yes, insects, sing or otherwise rock their antiphonal and conversational repertoire all day and all night. Which leads us to one of the many highlights of what is now the last few months of the artistic season. This Saturday,