Long-legged wader, with a fine, straight, black bill. Legs extend out backwards when flying, black wings and white body.
Frequents areas of shallow fresh, brackish or salt water. Migratory, generally wintering in Africa. Food mainy insects. Nest is lined scrape on islet or near water, occasionally a raised mound of vegeation in shallow water.
Spotted on salt beds in the Rio Formosa National Park area. (21/8/11 - one photo of poor quality deleted, one new photo added taken exactly the same place, even the same salt bed, one week later on 20/8/11. New photo is now the first photo.)