| species | Black-headed Gull - Chroicocephalus ridibundus |
|---|---|
| date | March 5, 2023 |
| type | report |
| notes | Adult non-breeding plumage black headed gull seen with flock along South Bank in central London. Had dark blue darvic on right leg with T4Y9 in white, and unreadable silver ring on left leg. Looking at the cr-birding.org website I think this is the ringing scheme: https://cr-birding.org/node/5420 |
RingBase adheres to EURING codes.
