It is one of the most important humid zones of Portugal and Europe, making it an ideal breeding ground for internationally protected migrating birds, such as the black-winged stilt, the Kentish plover, and the little tern.
Ito ay isa sa pinakamahalagang mahalumigmig na sona ng Portugal at ng Europa, anupat ginagawa itong angkop na lugar para sa pagpaparami ng internasyonal na iniingatang mga dumadayong ibon, tulad ng black-winged stilt, ng Kentish plover, at ng little tern.jw2019 jw2019