Gulls and Terns
Black-headed Gull - Guincho comum - Chroicocephalus ridibundus
caspian gull - larus cachinnans
Lesser Black-backed Gull - Gaivota d'asa escura - Larus fuscus
Little tern - Chilreta - Sternula albifrons
Sandwich tern - Sterna sandvicensis
Black Tern - Chlidonias niger - Gaivina preta
