Keywords: Thalasseus acuflavidus Colonie.jpg Cabot's Terns Thalasseus acuflavidus dense colony with a few Royal Terns Thalasseus maximus red bills USA http //images fws gov/default cfm fuseaction records display CFID 13411560 CFTOKEN 96730550 id 568D3E06 2D1143 2D3066 2D4011733D5090285F 2005-04-18 Dewhurst Donna A Public domain PD-USGov Thalasseus acuflavidus |