There are are a number of identifiable acoustic signatures in this image. Traffic, Pacific Chorus Frog chorus, songbird dawn chorus, Ruffed Grouse, Sooty Grouse, rain. Learn how to use these images to process large volumes of acoustic data and interpreting these images by clicking on the image itself. We are currently using these Long Duration False Colour Spectrograms as part of our Rapid Visual Scanning technique to study Species At Risk and nocturnal owls in coastal BC.