7 birds present including 2 ringed birds (1|VZB) originating from Spain, genuine wild birds.
"The adult (1|VZB) was ringed as a pullus (1cy, possibly female) on 7 August 2010, and was seen in the past 10 years only once, 1700 km to the north-east from the Fuente de Piedra colony at Saline di Cervia, Adriatic coast, near Ravenna, north-eastern Italy, on 16 April 2016;
the young bird (2|VPB) was ringed as a pullus (1cy) on 17 August 2019, also at Fuente de Piedra."