A green tree frog by Silvia Molinari. You can find a gallery of her work here.

Late summer evenings by the lake always makes me think of a choir of frogs that I still remember from my childhood. When I was a kid I never thought of all the different sounds that frogs can make. But almost like birds every different frog species makes a unique sound. Here you can find a sampling of just some of these sounds (spoiler alert: no croak or ribbit!).