This species has a strange behavior: They teeter their tails up and down continuously, as they forage in shallow waters. For the first time, I saw them in Playa Tambor, but they do occur in other parts of the country. It surprised me to find one at Concasa on September 3rd, 2017; it was right at the start of the migration.
The reflection on the pond is nice on this picture.
It surprised me that one of these birds came to Concasa.
