Reflection in the river

Most of the underwater sounds that you can hear in this recording were made by caddisfly larvae. These live on the river bed, where they make cases by spinning together stones, sand, leaves and twigs with a silk they secrete from glands around the mouth. They make these sounds by rubbing their legs against their heads, to warn off other caddisfly larvae from their feeding nets. You can also hear sounds made by water plants and minnows as they feed. These sounds are accompanied by two poems about the Allen written and narrated by Tony Horitz.