The presence of A.franciscana in the Ebro Delta saltern (Alfaques Bay, Tarragona) () , as well as in the French saltern in Sete and Aigues Mortes (Languedoc-Roussillon) (Thiery & Robert, 1992; Amat et al., 2005) could support the suspected role of water birds as dispersors of A.franciscana through their West Mediterranean flyway,