Merzouga is a small Moroccan town in the Sahara Desert, near the Algerian border. It’s known as a gateway to Erg Chebbi, a huge expanse of sand dunes north of town. West of Merzouga, Dayet Srji is a seasonal salt lake that’s often dry in summer. When full, it attracts a wide range of migratory and desert birds, including desert warblers, Egyptian nightjars and, occasionally, flamingos.