13th - Today I had a brief walk along the Canal d' Arles in the direction of Mas Thibert. The highlights were 3 magnificent Caspian Terns, my first in the Camargue this year, that were fishing along the canal, and at least 5 roosting Black-crowned Night Herons, which included two 1st summer birds. Also seen were numerous Greenfinches and Goldfinches, a dozen Cetti's Warblers, 3 Sardinian Warblers, 4 Blackcaps and a Kingfisher.