Lachlan Bird Island Panels (IMAGE) Duke University Caption The six panels on this graphic represent different populations of Chaffinches. (Catalonia (A), São Miguel (Azores) (B), Madeira (C), El Hierro (D), Tenerife (E), and Gran Canaria (Canary Islands) (F).) Each dot represents one syllable sung by one bird. Colors represent the position of phrases from start (S) to end (E) within the song. The path on each panel is the individual song represented by the spectrogram below that panel. Credit Robert Lachlan, Duke University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.