This LBBG has a metal Dutch ring: Arnhem 5.248.763. Bird ringed by Norman as pullus, on 12 July 1988 at Maasvlakte, Netherlands (51° 57' 36 , 4° 3' 35), about 100 meters from the current breeding location.

The slender bill and friendly facial expression, together with the smaller size compared to its mate strongly suggest this is a female.